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57102918 = 2360715679
BaseRepresentation
bin1101100111010…
…1001001000110
310222110010110220
43121311021012
5104104243133
65355525210
71262236545
oct331651106
9128403426
1057102918
112a2622a4
1217159806
13baa4412
14782615c
15502e5b3
hex3675246

57102918 has 16 divisors (see below), whose sum is σ = 114401280. Its totient is φ = 19001736.

The previous prime is 57102911. The next prime is 57102931. The reversal of 57102918 is 81920175.

57102918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×571029182 = 6521486488229448, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57102911) 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, 4198 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (7150080).

Almost surely, 257102918 is an apocalyptic number.

57102918 is an abundant number, since it is smaller than the sum of its proper divisors (57298362).

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

57102918 is a wasteful number, since it uses less digits than its factorization.

57102918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16291.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 57102918 is about 7556.6472724350. The cubic root of 57102918 is about 385.0815996152.

The spelling of 57102918 in words is "fifty-seven million, one hundred two thousand, nine hundred eighteen".

Divisors: 1 2 3 6 607 1214 1821 3642 15679 31358 47037 94074 9517153 19034306 28551459 57102918