defective number

de·fec·tive num·ber

D d

Definitions of defective number words

noun defective number a positive number that is greater than the sum of all positive integers that are submultiples of it, as 10, which is greater than the sum of 1, 2, and 5. 1
noun defective number (number theory) A deficient number. 0

before 1720

One of the 49% newest English words

First recorded in 1720-30

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 1% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

This diagram is provided by Google Ngram Viewer

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