Phrase guide

friendly number

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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noun

Meaning 1

A number that shares its abundancy with another positive integer.

Definition source: English Wiktionary via Wiktextract

Examples

The number 30 is a friendly number because both 30 and 140 have an abundancy index of 2.4.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Word forms

Inflections and variants

friendly numbers — plural

Word family

Derived and related words

Derived: none provided

Related: none provided

Semantic map

Other relationships

Sources

Where this information comes from

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