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56634980 = 2252831749
BaseRepresentation
bin1101100000001…
…0111001100100
310221120100120212
43120002321210
5103444304410
65341514552
71255250363
oct330027144
9127510525
1056634980
1129a72776
1216b72a58
13b96c42c
1477437da
154e8ab05
hex3602e64

56634980 has 12 divisors (see below), whose sum is σ = 118933500. Its totient is φ = 22653984.

The previous prime is 56634979. The next prime is 56634989. The reversal of 56634980 is 8943665.

It can be written as a sum of positive squares in 2 ways, for example, as 39262756 + 17372224 = 6266^2 + 4168^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56634989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415855 + ... + 1415894.

It is an arithmetic number, because the mean of its divisors is an integer number (9911125).

Almost surely, 256634980 is an apocalyptic number.

It is an amenable number.

56634980 is an abundant number, since it is smaller than the sum of its proper divisors (62298520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56634980 is a wasteful number, since it uses less digits than its factorization.

56634980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831758 (or 2831756 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 56634980 is about 7525.6215690134. The cubic root of 56634980 is about 384.0268445498.

The spelling of 56634980 in words is "fifty-six million, six hundred thirty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 2831749 5663498 11326996 14158745 28317490 56634980