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57065892 = 223132191481
BaseRepresentation
bin1101100110110…
…0000110100100
310222101020200120
43121230012210
5104102102032
65355041540
71262023602
oct331540644
9128336616
1057065892
112a2374a4
12171402b0
13ba90600
147816872
15502362c
hex366c1a4

57065892 has 72 divisors (see below), whose sum is σ = 151875360. Its totient is φ = 16623360.

The previous prime is 57065857. The next prime is 57065893. The reversal of 57065892 is 29856075.

It is not an unprimeable number, because it can be changed into a prime (57065893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37792 + ... + 39272.

It is an arithmetic number, because the mean of its divisors is an integer number (2109380).

Almost surely, 257065892 is an apocalyptic number.

57065892 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 57065892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75937680).

57065892 is an abundant number, since it is smaller than the sum of its proper divisors (94809468).

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

57065892 is a wasteful number, since it uses less digits than its factorization.

57065892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 57065892 is about 7554.1969791633. The cubic root of 57065892 is about 384.9983515980.

The spelling of 57065892 in words is "fifty-seven million, sixty-five thousand, eight hundred ninety-two".

Divisors: 1 2 3 4 6 12 13 19 26 38 39 52 57 76 78 114 156 169 228 247 338 494 507 676 741 988 1014 1481 1482 2028 2962 2964 3211 4443 5924 6422 8886 9633 12844 17772 19253 19266 28139 38506 38532 56278 57759 77012 84417 112556 115518 168834 231036 250289 337668 365807 500578 731614 750867 1001156 1097421 1463228 1501734 2194842 3003468 4389684 4755491 9510982 14266473 19021964 28532946 57065892