Base | Representation |
---|---|
bin | 10111111110101010… |
… | …01101111100011000 |
3 | 1020020012010001100010 |
4 | 23333111031330120 |
5 | 202331130434213 |
6 | 5525235441520 |
7 | 634010350413 |
oct | 137725157430 |
9 | 36205101303 |
10 | 12873686808 |
11 | 5506951494 |
12 | 25b34562a0 |
13 | 12a2177378 |
14 | 8a1a88b7a |
15 | 505300ac3 |
hex | 2ff54df18 |
12873686808 has 32 divisors (see below), whose sum is σ = 32347600560. Its totient is φ = 4269444480.
The previous prime is 12873686783. The next prime is 12873686809. The reversal of 12873686808 is 80868637821.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12873686809) 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, 1356703 + ... + 1366158.
Almost surely, 212873686808 is an apocalyptic number.
It is an amenable number.
12873686808 is an abundant number, since it is smaller than the sum of its proper divisors (19473913752).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12873686808 is a wasteful number, since it uses less digits than its factorization.
12873686808 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2723067 (or 2723063 counting only the distinct ones).
The product of its (nonzero) digits is 6193152, while the sum is 57.
The spelling of 12873686808 in words is "twelve billion, eight hundred seventy-three million, six hundred eighty-six thousand, eight hundred eight".
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