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57860140 = 225131391601
BaseRepresentation
bin1101110010111…
…0000000101100
311000212121012011
43130232000230
5104303011030
65424051004
71301542312
oct334560054
9130777164
1057860140
112a72a1a8
1217463a64
13bcaac90
1479820b2
15512db2a
hex372e02c

57860140 has 48 divisors (see below), whose sum is σ = 131876640. Its totient is φ = 21196800.

The previous prime is 57860137. The next prime is 57860161. The reversal of 57860140 is 4106875.

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, 35340 + ... + 36940.

It is an arithmetic number, because the mean of its divisors is an integer number (2747430).

Almost surely, 257860140 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 57860140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65938320).

57860140 is an abundant number, since it is smaller than the sum of its proper divisors (74016500).

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

57860140 is a wasteful number, since it uses less digits than its factorization.

57860140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1760 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 57860140 is about 7606.5853048526. The cubic root of 57860140 is about 386.7762752415.

The spelling of 57860140 in words is "fifty-seven million, eight hundred sixty thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 139 260 278 556 695 1390 1601 1807 2780 3202 3614 6404 7228 8005 9035 16010 18070 20813 32020 36140 41626 83252 104065 208130 222539 416260 445078 890156 1112695 2225390 2893007 4450780 5786014 11572028 14465035 28930070 57860140