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57132907460 = 22517316512401
BaseRepresentation
bin110101001101011000…
…101111101111000100
312110110200122102011122
4311031120233233010
51414002011014320
642125124253112
74061543462216
oct651530575704
9173420572148
1057132907460
1122259044aa2
12b0a5841198
13550676b925
142a9dba65b6
151745bb3d25
hexd4d62fbc4

57132907460 has 24 divisors (see below), whose sum is σ = 120672633816. Its totient is φ = 22721062400.

The previous prime is 57132907439. The next prime is 57132907477. The reversal of 57132907460 is 6470923175.

It can be written as a sum of positive squares in 4 ways, for example, as 22267802176 + 34865105284 = 149224^2 + 186722^2 .

It is a super-2 number, since 2×571329074602 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8252741 + ... + 8259660.

It is an arithmetic number, because the mean of its divisors is an integer number (5028026409).

Almost surely, 257132907460 is an apocalyptic number.

It is an amenable number.

57132907460 is an abundant number, since it is smaller than the sum of its proper divisors (63539726356).

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

57132907460 is a wasteful number, since it uses less digits than its factorization.

57132907460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16512583 (or 16512581 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 57132907460 in words is "fifty-seven billion, one hundred thirty-two million, nine hundred seven thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 173 346 692 865 1730 3460 16512401 33024802 66049604 82562005 165124010 330248020 2856645373 5713290746 11426581492 14283226865 28566453730 57132907460