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57079870 = 257972253
BaseRepresentation
bin1101100110111…
…1100000111110
310222101221212021
43121233200332
5104103023440
65355230354
71262112421
oct331574076
9128357767
1057079870
112a246a51
12171483ba
13ba96a93
14781b9b8
15502784a
hex366f83e

57079870 has 16 divisors (see below), whose sum is σ = 104045760. Its totient is φ = 22542624.

The previous prime is 57079843. The next prime is 57079873. The reversal of 57079870 is 7897075.

It is a super-2 number, since 2×570798702 = 6516223118433800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57079873) 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, 35337 + ... + 36916.

It is an arithmetic number, because the mean of its divisors is an integer number (6502860).

Almost surely, 257079870 is an apocalyptic number.

57079870 is a deficient number, since it is larger than the sum of its proper divisors (46965890).

57079870 is a wasteful number, since it uses less digits than its factorization.

57079870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72339.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 57079870 is about 7555.1221035798. The cubic root of 57079870 is about 385.0297834945.

The spelling of 57079870 in words is "fifty-seven million, seventy-nine thousand, eight hundred seventy".

Divisors: 1 2 5 10 79 158 395 790 72253 144506 361265 722530 5707987 11415974 28539935 57079870