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57580432 = 2471371557
BaseRepresentation
bin1101101110100…
…1101110010000
311000100101111121
43123221232100
5104220033212
65414052024
71266265660
oct333515620
9130311447
1057580432
112a559038
121734a014
13bc10880
14790c1a0
1550c5d07
hex36e9b90

57580432 has 80 divisors (see below), whose sum is σ = 139491072. Its totient is φ = 22417920.

The previous prime is 57580427. The next prime is 57580459. The reversal of 57580432 is 23408575.

It is a happy number.

It is a super-2 number, since 2×575804322 = 6631012298613248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103098 + ... + 103654.

Almost surely, 257580432 is an apocalyptic number.

57580432 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57580432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69745536).

57580432 is an abundant number, since it is smaller than the sum of its proper divisors (81910640).

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

57580432 is a wasteful number, since it uses less digits than its factorization.

57580432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 57580432 is about 7588.1771197040. The cubic root of 57580432 is about 386.1520157957.

The spelling of 57580432 in words is "fifty-seven million, five hundred eighty thousand, four hundred thirty-two".

Divisors: 1 2 4 7 8 13 14 16 26 28 52 56 71 91 104 112 142 182 208 284 364 497 557 568 728 923 994 1114 1136 1456 1846 1988 2228 3692 3899 3976 4456 6461 7241 7384 7798 7952 8912 12922 14482 14768 15596 25844 28964 31192 39547 50687 51688 57928 62384 79094 101374 103376 115856 158188 202748 276829 316376 405496 514111 553658 632752 810992 1028222 1107316 2056444 2214632 3598777 4112888 4429264 7197554 8225776 14395108 28790216 57580432