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57112980 = 22353892447
BaseRepresentation
bin1101100111011…
…1100110010100
310222110122021120
43121313212110
5104110103410
65400043540
71262311101
oct331674624
9128418246
1057112980
112a269911
12171635b0
13baa8b82
147829aa8
155032570
hex3677994

57112980 has 48 divisors (see below), whose sum is σ = 160392960. Its totient is φ = 15184768.

The previous prime is 57112967. The next prime is 57112981. The reversal of 57112980 is 8921175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57112981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22117 + ... + 24563.

It is an arithmetic number, because the mean of its divisors is an integer number (3341520).

Almost surely, 257112980 is an apocalyptic number.

It is an amenable number.

57112980 is an abundant number, since it is smaller than the sum of its proper divisors (103279980).

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

57112980 is a wasteful number, since it uses less digits than its factorization.

57112980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 2846 counting only the distinct ones).

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

The square root of 57112980 is about 7557.3130145575. The cubic root of 57112980 is about 385.1042164600.

The spelling of 57112980 in words is "fifty-seven million, one hundred twelve thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 389 778 1167 1556 1945 2334 2447 3890 4668 4894 5835 7341 7780 9788 11670 12235 14682 23340 24470 29364 36705 48940 73410 146820 951883 1903766 2855649 3807532 4759415 5711298 9518830 11422596 14278245 19037660 28556490 57112980