The folowing table expresses '406' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|
| 2 | 110010110 | 101 | 10 | 1 | |||||
| 3 | 120001 | 11 | 2 | ||||||
| 4 | 12112 | 13,10 | 1 | ||||||
| 5 | 3111 | 11 | 2 | ||||||
| 6 | 1514 | 15,10 | 1 | ||||||
| 7 | 1120 | 4 | |||||||
| 8 | 626 | 16 | 7 | ||||||
| 9 | 501 | 6 | |||||||
| 10 | 406 | 10 | 1 | ||||||
| 11 | 33A | 15 | 6 | ||||||
| 12 | 29A | 19 | A | ||||||
| 13 | 253 | A | |||||||
| 14 | 210 | 3 | |||||||
| 15 | 1C1 | E | |||||||
| 16 | 196 | 10 | 1 |
Factors: 2 * 7 * 29
406 is the sum of the counting numbers from 1 to 28 (See 'The Sum/Product of the First N Counting Numbers').