Base | Representation |
---|---|
bin | 101111101111… |
… | …001001011000 |
3 | 212112202211001 |
4 | 233233021120 |
5 | 11200421010 |
6 | 1124114344 |
7 | 211236421 |
oct | 57571130 |
9 | 25482731 |
10 | 12513880 |
11 | 7077955 |
12 | 42359b4 |
13 | 2791b82 |
14 | 193a648 |
15 | 1172c3a |
hex | bef258 |
12513880 has 32 divisors (see below), whose sum is σ = 28285200. Its totient is φ = 4982656.
The previous prime is 12513869. The next prime is 12513889. The reversal of 12513880 is 8831521.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12513889) 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, 10179 + ... + 11341.
Almost surely, 212513880 is an apocalyptic number.
12513880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12513880 is an abundant number, since it is smaller than the sum of its proper divisors (15771320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12513880 is a wasteful number, since it uses less digits than its factorization.
12513880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1443 (or 1439 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 28.
The square root of 12513880 is about 3537.4962897507. The cubic root of 12513880 is about 232.1653102430.
The spelling of 12513880 in words is "twelve million, five hundred thirteen thousand, eight hundred eighty".
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