Base | Representation |
---|---|
bin | 101111101101… |
… | …001100110100 |
3 | 212112100212210 |
4 | 233231030310 |
5 | 11200142113 |
6 | 1124013420 |
7 | 211204242 |
oct | 57551464 |
9 | 25470783 |
10 | 12505908 |
11 | 7071968 |
12 | 4231270 |
13 | 278b35c |
14 | 1937792 |
15 | 11706c3 |
hex | bed334 |
12505908 has 24 divisors (see below), whose sum is σ = 29397312. Its totient is φ = 4137664.
The previous prime is 12505903. The next prime is 12505939. The reversal of 12505908 is 80950521.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12505903) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160 + ... + 5447.
It is an arithmetic number, because the mean of its divisors is an integer number (1224888).
Almost surely, 212505908 is an apocalyptic number.
It is an amenable number.
12505908 is an abundant number, since it is smaller than the sum of its proper divisors (16891404).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12505908 is a wasteful number, since it uses less digits than its factorization.
12505908 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7751 (or 7749 counting only the distinct ones).
The product of its (nonzero) digits is 3600, while the sum is 30.
The square root of 12505908 is about 3536.3693246040. The cubic root of 12505908 is about 232.1159992642.
The spelling of 12505908 in words is "twelve million, five hundred five thousand, nine hundred eight".
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