Number info: 40 (decimal)
Conversion
| Decimal | 40 |
| Binary | 101000 |
| Hexadecimal | 0x28 |
| Roman | XL |
Math
| Square root of | 1600 |
| Factors | 5 2 2 2 |
Miscellaneous
| English | forty |
| Wikipedia article about 40 | Article about 40 |
| ASCII code for | Open parenthesis (or open bracket) |
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