The folowing table expresses '2628' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR12 | DR11 | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 101001000100 | 100 | 1 | |||||||||
| 3 | 10121100 | 20 | 2 | |||||||||
| 4 | 221010 | 12 | 3 | |||||||||
| 5 | 41003 | 13 | 4 | |||||||||
| 6 | 20100 | 3 | ||||||||||
| 7 | 10443 | 15 | 6 | |||||||||
| 8 | 5104 | 12 | 3 | |||||||||
| 9 | 3540 | 13 | 4 | |||||||||
| 10 | 2628 | 18 | 9 | |||||||||
| 11 | 1A7A | 26 | 8 | |||||||||
| 12 | 1630 | A | ||||||||||
| 13 | 1272 | C | ||||||||||
| 14 | D5A | 20 | 2 | |||||||||
| 15 | BA3 | 19 | A | |||||||||
| 16 | A44 | 12 | 3 |
Factors: 22 * 32 * 73
2 is the sum of the counting numbers from 1 to 72 (See 'The Sum/Product of the First N Counting Numbers').