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57256974 = 2323379439
BaseRepresentation
bin1101101001101…
…0110000001110
310222201221210200
43122122300032
5104124210344
65403114330
71263450645
oct332326016
9128657720
1057256974
112a358015
12172129a6
13bb29588
14786635c
155060069
hex369ac0e

57256974 has 24 divisors (see below), whose sum is σ = 124438080. Its totient is φ = 19027008.

The previous prime is 57256973. The next prime is 57257009. The reversal of 57256974 is 47965275.

57256974 is a `hidden beast` number, since 572 + 5 + 6 + 9 + 74 = 666.

57256974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×572569742 = 6556722143273352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57256973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1347 + ... + 10785.

It is an arithmetic number, because the mean of its divisors is an integer number (5184920).

Almost surely, 257256974 is an apocalyptic number.

57256974 is an abundant number, since it is smaller than the sum of its proper divisors (67181106).

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

57256974 is a wasteful number, since it uses less digits than its factorization.

57256974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9784 (or 9781 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 57256974 is about 7566.8338160686. The cubic root of 57256974 is about 385.4275881291.

The spelling of 57256974 in words is "fifty-seven million, two hundred fifty-six thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 9 18 337 674 1011 2022 3033 6066 9439 18878 28317 56634 84951 169902 3180943 6361886 9542829 19085658 28628487 57256974