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57164430 = 2352382847
BaseRepresentation
bin1101101000010…
…0001010001110
310222120020212010
43122010022032
5104113230210
65401122050
71262614101
oct332041216
9128506763
1057164430
112a2a4534
1217189326
13bac640b
147840738
155042920
hex368428e

57164430 has 32 divisors (see below), whose sum is σ = 143161344. Its totient is φ = 14580896.

The previous prime is 57164417. The next prime is 57164431. The reversal of 57164430 is 3446175.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57164431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40734 + ... + 42113.

It is an arithmetic number, because the mean of its divisors is an integer number (4473792).

Almost surely, 257164430 is an apocalyptic number.

57164430 is an abundant number, since it is smaller than the sum of its proper divisors (85996914).

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

57164430 is a wasteful number, since it uses less digits than its factorization.

57164430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82880.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 57164430 is about 7560.7162359131. The cubic root of 57164430 is about 385.2198216180.

The spelling of 57164430 in words is "fifty-seven million, one hundred sixty-four thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 82847 165694 248541 414235 497082 828470 1242705 1905481 2485410 3810962 5716443 9527405 11432886 19054810 28582215 57164430