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57679690 = 257181239
BaseRepresentation
bin1101110000000…
…1111101001010
311000112102122211
43130001331022
5104231222230
65420135334
71300161235
oct334017512
9130472584
1057679690
112a616672
121739754a
13bc46ac3
14793641c
1550e542a
hex3701f4a

57679690 has 16 divisors (see below), whose sum is σ = 105287040. Its totient is φ = 22746640.

The previous prime is 57679681. The next prime is 57679711. The reversal of 57679690 is 9697675.

57679690 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 2×576796902 = 6653893276992200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 39910 + ... + 41329.

It is an arithmetic number, because the mean of its divisors is an integer number (6580440).

Almost surely, 257679690 is an apocalyptic number.

57679690 is a deficient number, since it is larger than the sum of its proper divisors (47607350).

57679690 is a wasteful number, since it uses less digits than its factorization.

57679690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81317.

The product of its (nonzero) digits is 714420, while the sum is 49.

The square root of 57679690 is about 7594.7146095163. The cubic root of 57679690 is about 386.3737732729.

The spelling of 57679690 in words is "fifty-seven million, six hundred seventy-nine thousand, six hundred ninety".

Divisors: 1 2 5 10 71 142 355 710 81239 162478 406195 812390 5767969 11535938 28839845 57679690