Almost perfect number

Almost perfect number - natural number whose proper divisors sum to one less than itself. Article “Almost perfect number” in Simple English Wikipedia has 19.8 points for quality (as of July 1, 2026). The article contains 2 references and 4 sections.

This article has the best quality in Tamil Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “Almost perfect number”, its content was written by 3 registered users of Simple English Wikipedia and edited by 202 registered Wikipedia users in all languages.

The article is cited 25 times in Simple English Wikipedia and cited 926 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #1815 in February 2022
• Global: #24700 in September 2003

The highest popularity rank from 2008:

• Local (Simple English): #27498 in July 2022
• Global: #421959 in September 2008

There are 18 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Tamil (ta) கிட்டத்தட்ட நிறைவெண்		29.0564
2	Chinese (zh) 殆完全數		23.1
3	English (en) Almost perfect number		20.6514
4	Simple English (simple) Almost perfect number		19.8394
5	Hungarian (hu) Majdnem tökéletes számok		19.2362
6	Indonesian (id) Bilangan hampir sempurna		15.571
7	Spanish (es) Número casi perfecto		13.4351
8	Italian (it) Numero lievemente difettivo		11.457
9	Vietnamese (vi) Số gần hoàn thiện thiếu		4.7589
10	Swedish (sv) Nästan-perfekt tal		2.9677

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "Almost perfect number" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Almost perfect number		104 253
2	French (fr) Nombre presque parfait		26 449
3	Dutch (nl) Bijna perfect getal		22 974
4	Russian (ru) Слегка недостаточное число		20 738
5	Italian (it) Numero lievemente difettivo		14 163
6	Hebrew (he) מספר כמעט משוכלל		6 444
7	Swedish (sv) Nästan-perfekt tal		6 444
8	Finnish (fi) Lähes täydellinen luku		5 535
9	Chinese (zh) 殆完全數		5 001
10	Spanish (es) Número casi perfecto		4 887

More...

The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Almost perfect number" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Almost perfect number		479
2	Dutch (nl) Bijna perfect getal		117
3	Chinese (zh) 殆完全數		89
4	French (fr) Nombre presque parfait		33
5	Vietnamese (vi) Số gần hoàn thiện thiếu		19
6	Italian (it) Numero lievemente difettivo		17
7	Russian (ru) Слегка недостаточное число		15
8	Simple English (simple) Almost perfect number		15
9	Spanish (es) Número casi perfecto		14
10	Finnish (fi) Lähes täydellinen luku		10

More...

The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Almost perfect number" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Almost perfect number		48
2	French (fr) Nombre presque parfait		26
3	Italian (it) Numero lievemente difettivo		18
4	Dutch (nl) Bijna perfect getal		18
5	Russian (ru) Слегка недостаточное число		16
6	Hebrew (he) מספר כמעט משוכלל		13
7	Vietnamese (vi) Số gần hoàn thiện thiếu		13
8	Swedish (sv) Nästan-perfekt tal		11
9	Chinese (zh) 殆完全數		10
10	Spanish (es) Número casi perfecto		6

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Almost perfect number" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) Almost perfect number		0
2	Esperanto (eo) Preskaŭ perfekta nombro		0
3	Spanish (es) Número casi perfecto		0
4	Finnish (fi) Lähes täydellinen luku		0
5	French (fr) Nombre presque parfait		0
6	Hebrew (he) מספר כמעט משוכלל		0
7	Hungarian (hu) Majdnem tökéletes számok		0
8	Indonesian (id) Bilangan hampir sempurna		0
9	Italian (it) Numero lievemente difettivo		0
10	Dutch (nl) Bijna perfect getal		0

More...

The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Almost perfect number" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Almost perfect number		225
2	Swedish (sv) Nästan-perfekt tal		162
3	Hungarian (hu) Majdnem tökéletes számok		125
4	Ukrainian (uk) Злегка недостатні числа		99
5	Russian (ru) Слегка недостаточное число		78
6	Chinese (zh) 殆完全數		53
7	Dutch (nl) Bijna perfect getal		44
8	French (fr) Nombre presque parfait		40
9	Esperanto (eo) Preskaŭ perfekta nombro		29
10	Simple English (simple) Almost perfect number		25

More...

#	Language	Value
en	English Almost perfect number
eo	Esperanto Preskaŭ perfekta nombro
es	Spanish Número casi perfecto
fi	Finnish Lähes täydellinen luku
fr	French Nombre presque parfait
he	Hebrew מספר כמעט משוכלל
hu	Hungarian Majdnem tökéletes számok
id	Indonesian Bilangan hampir sempurna
it	Italian Numero lievemente difettivo
nl	Dutch Bijna perfect getal
ru	Russian Слегка недостаточное число
simple	Simple English Almost perfect number
sl	Slovenian Skoraj popolno število
sv	Swedish Nästan-perfekt tal
ta	Tamil கிட்டத்தட்ட நிறைவெண்
uk	Ukrainian Злегка недостатні числа
vi	Vietnamese Số gần hoàn thiện thiếu
zh	Chinese 殆完全數

Best Rank

Simple English: #27498 07.2022

Global: #421959 09.2008

Best Rank

Simple English: #1815 02.2022

Global: #24700 09.2003

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information