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57117308 = 22109269487
BaseRepresentation
bin1101100111100…
…0101001111100
310222110212012212
43121320221330
5104110223213
65400115552
71262326523
oct331705174
9128425185
1057117308
112a272096
1217165bb8
13baaab31
14782b4ba
1550339a8
hex3678a7c

57117308 has 24 divisors (see below), whose sum is σ = 101455200. Its totient is φ = 28133568.

The previous prime is 57117301. The next prime is 57117329. The reversal of 57117308 is 80371175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57117301) 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, 117041 + ... + 117527.

It is an arithmetic number, because the mean of its divisors is an integer number (4227300).

Almost surely, 257117308 is an apocalyptic number.

It is an amenable number.

57117308 is a deficient number, since it is larger than the sum of its proper divisors (44337892).

57117308 is a wasteful number, since it uses less digits than its factorization.

57117308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 57117308 is about 7557.5993542923. The cubic root of 57117308 is about 385.1139438982.

The spelling of 57117308 in words is "fifty-seven million, one hundred seventeen thousand, three hundred eight".

Divisors: 1 2 4 109 218 269 436 487 538 974 1076 1948 29321 53083 58642 106166 117284 131003 212332 262006 524012 14279327 28558654 57117308