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57680382 = 2357716661
BaseRepresentation
bin1101110000001…
…0000111111110
311000112110121110
43130002013332
5104231233012
65420142450
71300163244
oct334020776
9130473543
1057680382
112a617141
1217397a26
13bc47206
147936794
1550e573c
hex37021fe

57680382 has 16 divisors (see below), whose sum is σ = 115567632. Its totient is φ = 19192320.

The previous prime is 57680351. The next prime is 57680401. The reversal of 57680382 is 28308675.

It is a self number, because there is not a number n which added to its sum of digits gives 57680382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4869 + ... + 11792.

It is an arithmetic number, because the mean of its divisors is an integer number (7222977).

Almost surely, 257680382 is an apocalyptic number.

57680382 is an abundant number, since it is smaller than the sum of its proper divisors (57887250).

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

57680382 is a wasteful number, since it uses less digits than its factorization.

57680382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17243.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 57680382 is about 7594.7601673786. The cubic root of 57680382 is about 386.3753184128.

The spelling of 57680382 in words is "fifty-seven million, six hundred eighty thousand, three hundred eighty-two".

Divisors: 1 2 3 6 577 1154 1731 3462 16661 33322 49983 99966 9613397 19226794 28840191 57680382