File:Die_Gartenlaube_(1887)_b_320_3.jpg · Wikimedia Commons · See Wikimedia Commons
Also known as twenty eight, twenty-eight, 28*1, 1*28, number 28, ㉘
natural number
AI overview
"28" is a natural number that comes after 27 and before 29 in the sequence of counting numbers. It is notable in mathematics as a perfect number, meaning its divisors (1, 2, 4, 7, and 14) add up exactly to 28 itself.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Instance of
- composite number
- Followed by
- 29
- Follows
- 27
- Image
- Maine 28.svg
Show 7 more facts
- code
- ௨௰௮
- Commons category
- 28 (number)
- numeric value
- 28
- prime factor
- 7
- Unicode character
- ㉘
- number of decimal digits
- 2
- maintained by WikiProject
- WikiProject Mathematics
Sources (3)
via Wikidata · CC0
Gallery (2)
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