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57031746044 = 22713792278737
BaseRepresentation
bin110101000111010110…
…110110000111111100
312110012122021212210112
4311013112312013330
51413300111333134
642111112125152
74056204562040
oct650726660774
9173178255715
1057031746044
1122206a2aa19
12b0779967b8
1354bb80c5c0
142a90592020
15173bd801ce
hexd475b61fc

57031746044 has 96 divisors (see below), whose sum is σ = 124954798080. Its totient is φ = 22175741952.

The previous prime is 57031746007. The next prime is 57031746089. The reversal of 57031746044 is 44064713075.

It is a junction number, because it is equal to n+sod(n) for n = 57031745992 and 57031746010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6523244 + ... + 6531980.

It is an arithmetic number, because the mean of its divisors is an integer number (1301612480).

Almost surely, 257031746044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57031746044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62477399040).

57031746044 is an abundant number, since it is smaller than the sum of its proper divisors (67923052036).

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

57031746044 is a wasteful number, since it uses less digits than its factorization.

57031746044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9067 (or 9065 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 57031746044 in words is "fifty-seven billion, thirty-one million, seven hundred forty-six thousand, forty-four".

Divisors: 1 2 4 7 13 14 26 28 52 79 91 158 182 227 316 364 454 553 908 1027 1106 1589 2054 2212 2951 3178 4108 5902 6356 7189 8737 11804 14378 17474 17933 20657 28756 34948 35866 41314 61159 71732 82628 113581 122318 125531 227162 233129 244636 251062 454324 466258 502124 690223 795067 932516 1380446 1590134 1631903 1983299 2760892 3180268 3263806 3966598 4831561 6527612 7933196 8972899 9663122 13883093 17945798 19326244 25782887 27766186 35891596 51565774 55532372 62810293 103131548 125620586 156680621 180480209 251241172 313361242 360960418 626722484 721920836 1096764347 2036848073 2193528694 4073696146 4387057388 8147392292 14257936511 28515873022 57031746044