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57872788 = 2231745641
BaseRepresentation
bin1101110011000…
…1000110010100
311000220020112121
43130301012110
5104303412123
65424225324
71301624221
oct334610624
9130806477
1057872788
112a738756
121746b244
13bcb396c
147986948
15513275d
hex3731194

57872788 has 12 divisors (see below), whose sum is σ = 101599092. Its totient is φ = 28844480.

The previous prime is 57872783. The next prime is 57872813. The reversal of 57872788 is 88727875.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13089924 + 44782864 = 3618^2 + 6692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57872783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21553 + ... + 24088.

It is an arithmetic number, because the mean of its divisors is an integer number (8466591).

Almost surely, 257872788 is an apocalyptic number.

It is an amenable number.

57872788 is a deficient number, since it is larger than the sum of its proper divisors (43726304).

57872788 is a wasteful number, since it uses less digits than its factorization.

57872788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45962 (or 45960 counting only the distinct ones).

The product of its digits is 1756160, while the sum is 52.

The square root of 57872788 is about 7607.4166443018. The cubic root of 57872788 is about 386.8044557812.

The spelling of 57872788 in words is "fifty-seven million, eight hundred seventy-two thousand, seven hundred eighty-eight".

Divisors: 1 2 4 317 634 1268 45641 91282 182564 14468197 28936394 57872788