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Zumkeller number

natural number whose divisors can be partitioned into two disjoint sets with equal sum
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Zumkeller number

Summary

Zumkeller number is known by 4 alternative names across languages and contexts.[1]

Key Facts

  • Reinhard Zumkeller is named after Zumkeller number[2].
  • Zumkeller number is a type of composite number[3].

Body

Definition and Type

Zumkeller number is a type of composite number[3].

Origins

Reinhard Zumkeller is named after Zumkeller number[2].

Why It Matters

Zumkeller number is known by 4 alternative names across languages and contexts.[1]

References

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

Direct Wikidata claims

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

Aggregate / graph-position facts

  1. [1] ↑ . Wikidata aliases. wikidata.org.

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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). Zumkeller number. Retrieved May 7, 2026, from https://4ort.xyz/entity/zumkeller-number
MLA “Zumkeller number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/zumkeller-number.
BibTeX @misc{4ortxyz_zumkeller-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Zumkeller number}}, year = {2026}, url = {https://4ort.xyz/entity/zumkeller-number}, note = {Accessed: 2026-05-07}}
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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. 15d ago · VGMaintenanceBot bot · 2026-09-08 view diff on Wikidata ↗
    Rosetta code page id → Zumkeller_numbers
    Subclass of → composite number
    Wikidata description → natural number whose divisors can be partitioned into two disjoint sets with equ
    Named after → Reinhard Zumkeller
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbsetqualifier-add:1| */ [[Property:P9675]]: 12489, Add qualifier to Rosetta Code page ID `Zumkeller_numbers`"
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