Definitions from Wiktionary (untouchable number)
▸ noun: (mathematics) A positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself).
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▸ noun: (mathematics) A positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself).
Similar:
nontotient,
perfect number,
odd number,
nude number,
inaccessible,
uncountable set,
deficient number,
noncototient,
prime number,
irrational number,
more...
▸ Words similar to untouchable number
▸ Usage examples for untouchable number
▸ Idioms related to untouchable number
▸ Wikipedia articles (New!)
▸ Words that often appear near untouchable number
▸ Rhymes of untouchable number
▸ Invented words related to untouchable number