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56672512 = 281317029
BaseRepresentation
bin1101100000110…
…0000100000000
310221122021001221
43120030010000
5104002010022
65342404424
71255464661
oct330140400
9127567057
1056672512
1129a98996
1216b90714
13b983540
147753368
154e96cc7
hex360c100

56672512 has 36 divisors (see below), whose sum is σ = 121832620. Its totient is φ = 26155008.

The previous prime is 56672491. The next prime is 56672513. The reversal of 56672512 is 21527665.

It can be written as a sum of positive squares in 2 ways, for example, as 26378496 + 30294016 = 5136^2 + 5504^2 .

It is not an unprimeable number, because it can be changed into a prime (56672513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5187 + ... + 11842.

Almost surely, 256672512 is an apocalyptic number.

56672512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

56672512 is an abundant number, since it is smaller than the sum of its proper divisors (65160108).

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

56672512 is a wasteful number, since it uses less digits than its factorization.

56672512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17058 (or 17044 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 56672512 is about 7528.1147706448. The cubic root of 56672512 is about 384.1116573446. Note that the first 3 decimals are identical.

The spelling of 56672512 in words is "fifty-six million, six hundred seventy-two thousand, five hundred twelve".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 208 256 416 832 1664 3328 17029 34058 68116 136232 221377 272464 442754 544928 885508 1089856 1771016 2179712 3542032 4359424 7084064 14168128 28336256 56672512