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57290982 = 2371364071
BaseRepresentation
bin1101101010001…
…1000011100110
310222210200110020
43122203003212
5104131302412
65403540010
71263652050
oct332430346
9128720406
1057290982
112a380621
121722a606
13bb3bbb8
1478748d0
15506a18c
hex36a30e6

57290982 has 16 divisors (see below), whose sum is σ = 130950912. Its totient is φ = 16368840.

The previous prime is 57290971. The next prime is 57290983. The reversal of 57290982 is 28909275.

57290982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1364071 = 57290982 / (5 + 7 + 2 + 9 + 0 + 9 + 8 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57290983) 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 7 ways as a sum of consecutive naturals, for example, 681994 + ... + 682077.

It is an arithmetic number, because the mean of its divisors is an integer number (8184432).

Almost surely, 257290982 is an apocalyptic number.

57290982 is an abundant number, since it is smaller than the sum of its proper divisors (73659930).

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

57290982 is a wasteful number, since it uses less digits than its factorization.

57290982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364083.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 57290982 is about 7569.0806575171. The cubic root of 57290982 is about 385.5038817591.

The spelling of 57290982 in words is "fifty-seven million, two hundred ninety thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 7 14 21 42 1364071 2728142 4092213 8184426 9548497 19096994 28645491 57290982