Home › Entities › general › almost perfect number

almost perfect number

natural number whose proper divisors sum to one less than itself
Thing general Q1526045
Press Enter · cited answer in seconds

almost perfect number

Summary

almost perfect number ranks in the top 2% of general entities by monthly Wikipedia readership (63 views/month).[1]

Key Facts

  • almost perfect number is a type of integer[2].
  • almost perfect number's different from is recorded as quasiperfect number[3].
  • almost perfect number's maintained by WikiProject is recorded as WikiProject Mathematics[4].

Body

Definition and Type

almost perfect number is a type of integer[2].

Why It Matters

almost perfect number ranks in the top 2% of general entities by monthly Wikipedia readership (63 views/month).[1] It has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[5] It is known by 20 alternative names across languages and contexts.[6]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [5] ↑ . Wikidata sitelinks. wikidata.org.
  3. [6] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). almost perfect number. Retrieved October 5, 2026, from https://4ort.xyz/entity/almost-perfect-number
MLA “almost perfect number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 5 Oct. 2026, https://4ort.xyz/entity/almost-perfect-number.
BibTeX @misc{4ortxyz_almost-perfect-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{almost perfect number}}, year = {2026}, url = {https://4ort.xyz/entity/almost-perfect-number}, note = {Accessed: 2026-10-05}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): almost perfect number — https://4ort.xyz/entity/almost-perfect-number (retrieved 2026-10-05)

Canonical URL: https://4ort.xyz/entity/almost-perfect-number · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 7d ago · YoshiRulz · 2026-09-29 view diff on Wikidata ↗
    Different from → quasiperfect number
    Maintained by wikiproject → WikiProject Mathematics
    Subclass of → —
    Subclass of → integer
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P1889]]: [[Q3343131]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.