Base | Representation |
---|---|
bin | 10111110110011010… |
… | …01100111111000100 |
3 | 1020001100212211011000 |
4 | 23323031030333010 |
5 | 202210421224433 |
6 | 5514324213300 |
7 | 632210154231 |
oct | 137315147704 |
9 | 36040784130 |
10 | 12804476868 |
11 | 548087aa97 |
12 | 259423a230 |
13 | 1290a24341 |
14 | 8967d0788 |
15 | 4ee1ce113 |
hex | 2fb34cfc4 |
12804476868 has 24 divisors (see below), whose sum is σ = 33196792160. Its totient is φ = 4268158920.
The previous prime is 12804476843. The next prime is 12804476911. The reversal of 12804476868 is 86867440821.
12804476868 is a `hidden beast` number, since 1 + 2 + 80 + 447 + 68 + 68 = 666.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59279878 + ... + 59280093.
Almost surely, 212804476868 is an apocalyptic number.
12804476868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
12804476868 is an abundant number, since it is smaller than the sum of its proper divisors (20392315292).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12804476868 is a wasteful number, since it uses less digits than its factorization.
12804476868 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 118559984 (or 118559976 counting only the distinct ones).
The product of its (nonzero) digits is 4128768, while the sum is 54.
The spelling of 12804476868 in words is "twelve billion, eight hundred four million, four hundred seventy-six thousand, eight hundred sixty-eight".
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