| 12345678 | ||
|---|---|---|
| < 12345677 | ||
| 12345679 > | ||
12345678 is a 8-digit-long number.
Properties
- Its factors are 1, 2, 3, 6, 9, 18, 47, 94, 141, 282, 423, 846, 14593, 29186, 43779, 87558, 131337, 262674, 685871, 1371742, 2057613, 4115226, 6172839 and 12345678, making it a composite number.[1][2][3] It is also a cubefree number.[4]
- 12345678 is an even number[5][6] .
- 12345678 is an unhappy number.[7][8]
- 12345678 is abundant.[9]
- Its prime factorization is 21 × 32 × 471 × 145931.
- The sum of 12345678's digits is 36.
Approximations
| Notation | Lower bound | Upper bound | |
|---|---|---|---|
| Up-arrow notation | 3514 ↑ 2 | ||
| Scientific notation | 1.235 x 107 | ||
| Slow-growing hierarchy | \(g_{\omega^{\omega}}(7)\) | \(g_{\omega^{\omega}}(8)\) | |
| Chained arrow notation | 3514 → 2 | ||
| Bowers' Exploding Array Function/Bird's array notation | {3514,2} | ||
| Hardy hierarchy | Hω(6172839) | Hω(6172839) | |
| Middle-growing hierarchy | m(ω,23) | ||
| Hyper-E notation | E7.0915 | ||
| Hyper-E notation (non-10 base) | \(E[3514]2\) | ||
| X-Sequence Hyper-Exponential Notation | 3514{1}2 | ||
| PlantStar's Debut Notation | [4] | [5] | |
| H* function | H(1.3) | H(1.4) | |
| Bashicu matrix system with respect to version 4 | (0)[3513] | (0)[3514] | |
Sources
- ↑ OEIS A002808 - Composite numbers
- ↑ Wolfram Alpha Is 12345678 composite?
- ↑ Wolfram Alpha 12345678's factors
- ↑ OEIS A004709 - Cubefree numbers
- ↑ OEIS A005843 - Even numbers
- ↑ Wolfram Alpha Is 12345678 even?
- ↑ Wolfram Alpha Unhappy Numbers
- ↑ OEIS A031177 - Unhappy Numbers
- ↑ OEIS A005101 - Abundant numbers