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57707972 = 22715113649
BaseRepresentation
bin1101110000100…
…0110111000100
311000120212110022
43130020313010
5104233123342
65420514312
71300336550
oct334106704
9130525408
1057707972
112a635943
12173ab998
13bc5693a
147942860
1550ed9d2
hex3708dc4

57707972 has 24 divisors (see below), whose sum is σ = 116188800. Its totient is φ = 24566400.

The previous prime is 57707939. The next prime is 57707977. The reversal of 57707972 is 27970775.

It is not an unprimeable number, because it can be changed into a prime (57707977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2597 + ... + 11052.

It is an arithmetic number, because the mean of its divisors is an integer number (4841200).

Almost surely, 257707972 is an apocalyptic number.

It is an amenable number.

57707972 is an abundant number, since it is smaller than the sum of its proper divisors (58480828).

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

57707972 is a wasteful number, since it uses less digits than its factorization.

57707972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 44.

The square root of 57707972 is about 7596.5763341126. The cubic root of 57707972 is about 386.4369129877.

The spelling of 57707972 in words is "fifty-seven million, seven hundred seven thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 151 302 604 1057 2114 4228 13649 27298 54596 95543 191086 382172 2060999 4121998 8243996 14426993 28853986 57707972