Compare 1 vs 28
| Property | 1 | 28 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 0 | 2 |
| Total factors | 0 | 3 |
| Prime factorization | 22 × 71 | |
| Prime factorization | 2 × 2 × 7 | |
| Divisors count | 1 | 6 |
| Divisors | 1 | 1, 2, 4, 7, 14, 28 |
| Number of properties | 0 | 0 |
| Roman numberals | I | XXVIII |
| Base 2 | 12 | 111002 |
| Base 3 | 13 | 10013 |
| Base 4 | 14 | 1304 |
| Base 5 | 15 | 1035 |
| Base 6 | 16 | 446 |
| Base 7 | 17 | 407 |
| Base 8 | 18 | 348 |
| Base 9 | 19 | 319 |
| Base 10 | 110 | 2810 |
| Base 11 | 111 | 2611 |
| Base 12 | 112 | 2412 |
| Base 13 | 113 | 2213 |
| Base 14 | 114 | 2014 |
| Base 15 | 115 | 1d15 |
| Base 16 | 116 | 1c16 |