| Decimal | 28 |
| Binary | 11100 |
| Hexadecimal | 0x1c |
| Roman | XXVIII |
| Square root of | 784 |
| Factors | 7 2 2 |
| English | twenty-eight |
| Wikipedia article about 28 | Article about 28 |
| RGB Color | #00001c, |
| ASCII code for | File Separator |
| random from 0 to 6 | Show |
| random from 0 to 10 | Show |
| random from 0 to 100 | Show |
| random from 0 to 1000 | Show |