Base | Representation |
---|---|
bin | 1101100001101… |
… | …0010110001010 |
3 | 10221202020022211 |
4 | 3120122112022 |
5 | 104010343033 |
6 | 5343535334 |
7 | 1256130361 |
oct | 330322612 |
9 | 127666284 |
10 | 56731018 |
11 | 2a028943 |
12 | 16bba54a |
13 | b9a4066 |
14 | 776a7d8 |
15 | 4ea92cd |
hex | 361a58a |
56731018 has 36 divisors (see below), whose sum is σ = 94214610. Its totient is φ = 25587408.
The previous prime is 56730967. The next prime is 56731019. The reversal of 56731018 is 81013765.
It can be written as a sum of positive squares in only one way, i.e., 47927929 + 8803089 = 6923^2 + 2967^2 .
It is not an unprimeable number, because it can be changed into a prime (56731019) by changing a digit.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1319305 + ... + 1319347.
Almost surely, 256731018 is an apocalyptic number.
56731018 is a gapful number since it is divisible by the number (58) formed by its first and last digit.
56731018 is a deficient number, since it is larger than the sum of its proper divisors (37483592).
56731018 is a wasteful number, since it uses less digits than its factorization.
56731018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 163 (or 97 counting only the distinct ones).
The product of its (nonzero) digits is 5040, while the sum is 31.
The square root of 56731018 is about 7531.9996016994. Note that the first 3 decimals coincide. The cubic root of 56731018 is about 384.2437914073.
The spelling of 56731018 in words is "fifty-six million, seven hundred thirty-one thousand, eighteen".
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