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57307469 = 537913687
BaseRepresentation
bin1101101010011…
…1000101001101
310222211112001212
43122213011031
5104132314334
65404144205
71264051112
oct332470515
9128745055
1057307469
112a391a4a
1217238065
13bb4655b
14787a909
15506eece
hex36a714d

57307469 has 8 divisors (see below), whose sum is σ = 59132160. Its totient is φ = 55510416.

The previous prime is 57307457. The next prime is 57307489. The reversal of 57307469 is 96470375.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57307469 - 224 = 40530253 is a prime.

It is a super-2 number, since 2×573074692 = 6568292006371922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57307489) 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, 2657 + ... + 11030.

It is an arithmetic number, because the mean of its divisors is an integer number (7391520).

Almost surely, 257307469 is an apocalyptic number.

It is an amenable number.

57307469 is a deficient number, since it is larger than the sum of its proper divisors (1824691).

57307469 is a wasteful number, since it uses less digits than its factorization.

57307469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13819.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 57307469 is about 7570.1696810574. The cubic root of 57307469 is about 385.5408578688.

The spelling of 57307469 in words is "fifty-seven million, three hundred seven thousand, four hundred sixty-nine".

Divisors: 1 53 79 4187 13687 725411 1081273 57307469