Base | Representation |
---|---|
bin | 10111010101101110… |
… | …00010100100001000 |
3 | 1012100020211201022101 |
4 | 23222313002210020 |
5 | 201130214402220 |
6 | 5431210203144 |
7 | 622340132230 |
oct | 135267024410 |
9 | 35306751271 |
10 | 12530231560 |
11 | 534aa97480 |
12 | 25184234b4 |
13 | 1248c73102 |
14 | 86c202cc0 |
15 | 4d50ab30a |
hex | 2eadc2908 |
12530231560 has 64 divisors (see below), whose sum is σ = 35149749120. Its totient is φ = 3905525760.
The previous prime is 12530231551. The next prime is 12530231569. The reversal of 12530231560 is 6513203521.
It is an interprime number because it is at equal distance from previous prime (12530231551) and next prime (12530231569).
It is a Harshad number since it is a multiple of its sum of digits (28).
It is not an unprimeable number, because it can be changed into a prime (12530231569) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2031049 + ... + 2037208.
It is an arithmetic number, because the mean of its divisors is an integer number (549214830).
Almost surely, 212530231560 is an apocalyptic number.
12530231560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12530231560 is an abundant number, since it is smaller than the sum of its proper divisors (22619517560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12530231560 is a wasteful number, since it uses less digits than its factorization.
12530231560 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4068286 (or 4068282 counting only the distinct ones).
The product of its (nonzero) digits is 5400, while the sum is 28.
The spelling of 12530231560 in words is "twelve billion, five hundred thirty million, two hundred thirty-one thousand, five hundred sixty".
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