Base | Representation |
---|---|
bin | 10111101010111111… |
… | …01000000000100100 |
3 | 1012210200112221121000 |
4 | 23311133220000210 |
5 | 202011403032402 |
6 | 5501022153300 |
7 | 626634452613 |
oct | 136537500044 |
9 | 35720487530 |
10 | 12708642852 |
11 | 5431774524 |
12 | 2568122830 |
13 | 1276c0bb19 |
14 | 887ba587a |
15 | 4e5a9dc1c |
hex | 2f57e8024 |
12708642852 has 72 divisors (see below), whose sum is σ = 33080825120. Its totient is φ = 4219244640.
The previous prime is 12708642809. The next prime is 12708642901. The reversal of 12708642852 is 25824680721.
It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.
It is a junction number, because it is equal to n+sod(n) for n = 12708642798 and 12708642807.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10852227 + ... + 10853397.
Almost surely, 212708642852 is an apocalyptic number.
12708642852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
12708642852 is an abundant number, since it is smaller than the sum of its proper divisors (20372182268).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12708642852 is a wasteful number, since it uses less digits than its factorization.
12708642852 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1818 (or 1493 counting only the distinct ones).
The product of its (nonzero) digits is 430080, while the sum is 45.
The spelling of 12708642852 in words is "twelve billion, seven hundred eight million, six hundred forty-two thousand, eight hundred fifty-two".
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