Word.ws English Dictionary

untouchable numbers

untouchable numbers is the plural of untouchable number.

Meaning of untouchable number

Noun

untouchable number (plural untouchable numbers)

  1. A positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself).

Questions about untouchable numbers

What is untouchable numbers the plural of?
Untouchable numbers is the plural of untouchable number.

Words near untouchable numbers in the dictionary

  1. untottering
  2. untouch
  3. untouchability
  4. untouchable
  5. untouchable number
  6. untouchable numbers
  7. untouchableness
  8. untouchables
  9. untouchably
  10. untouched
  11. untouchedly

Source and license

Adapted from Wiktionary: untouchable numbers (page history and authors); untouchable number (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “untouchable numbers.” Word.ws, https://word.ws/untouchable_numbers. Based on Wiktionary, CC BY-SA 4.0.