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57512084 = 22721392111
BaseRepresentation
bin1101101101100…
…1000010010100
311000012220202012
43123121002110
5104210341314
65412403352
71265562500
oct333310224
9130186665
1057512084
112a511753
1217316558
13bbb8726
1478d1300
1550b093e
hex36d9094

57512084 has 36 divisors (see below), whose sum is σ = 117976320. Its totient is φ = 24459120.

The previous prime is 57512057. The next prime is 57512131. The reversal of 57512084 is 48021575.

It is a self number, because there is not a number n which added to its sum of digits gives 57512084.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26189 + ... + 28299.

It is an arithmetic number, because the mean of its divisors is an integer number (3277120).

Almost surely, 257512084 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 57512084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58988160).

57512084 is an abundant number, since it is smaller than the sum of its proper divisors (60464236).

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

57512084 is a wasteful number, since it uses less digits than its factorization.

57512084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 57512084 is about 7583.6721975571. The cubic root of 57512084 is about 385.9991677611. Note that the first 3 decimals are identical.

The spelling of 57512084 in words is "fifty-seven million, five hundred twelve thousand, eighty-four".

Divisors: 1 2 4 7 14 28 49 98 139 196 278 556 973 1946 2111 3892 4222 6811 8444 13622 14777 27244 29554 59108 103439 206878 293429 413756 586858 1173716 2054003 4108006 8216012 14378021 28756042 57512084