158 (number)
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158 is an even whole number before 159 and after 157.
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| Cardinal | One hundred [and] fifty-eight |
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| Ordinal | 158th | ||
| Factorization |  |
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| Roman numeral | CLVIII | ||
| Binary | 10011110 | ||
| Octal | 236 | ||
| Hexadecimal | 9E | ||
[edit] In mathematics
158 is a nontotient, since there is no integer with 158 coprimes below it. 158 is a Perrin number, appearing after 68, 90, 119.
It is the number of digits in the decimal expansion of 100!, or the product of all the natural numbers up to and including 100.
[edit] In other fields
158 is also:
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