90 (number)
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90 (ninety) is an even number. It is divisible by 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90.
| ||||
|---|---|---|---|---|
| Cardinal | ninety | |||
| Ordinal | 90th (ninetieth) | |||
| Factorization | 2 · 32· 5 | |||
| Roman numeral | XC | |||
| Binary | 10110102 | |||
| Ternary | 101003 | |||
| Quaternary | 11224 | |||
| Quinary | 3305 | |||
| Senary | 2306 | |||
| Octal | 1328 | |||
| Duodecimal | 7612 | |||
| Hexadecimal | 5A16 | |||
| Vigesimal | 4A20 | |||
| Base 36 | 2I36 | |||
90 (number) Media
90 as the sum of distinct nonzero squares
A right angle measures ninety degrees.
The Witting polytope, with ninety van Oss polytopes
