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57038688 = 253379431
BaseRepresentation
bin1101100110010…
…1011101100000
310222022212101000
43121211131200
5104100214223
65354312000
71261551360
oct331453540
9128285330
1057038688
112a219013
1217128600
13ba81105
14780a9a0
15501a543
hex3665760

57038688 has 96 divisors (see below), whose sum is σ = 190149120. Its totient is φ = 16295040.

The previous prime is 57038677. The next prime is 57038693. The reversal of 57038688 is 88683075.

57038688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×570386882 = 6506823857522688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1333 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (1980720).

Almost surely, 257038688 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 57038688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95074560).

57038688 is an abundant number, since it is smaller than the sum of its proper divisors (133110432).

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

57038688 is a wasteful number, since it uses less digits than its factorization.

57038688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9457 (or 9443 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 57038688 is about 7552.3961760490. The cubic root of 57038688 is about 384.9371640859.

The spelling of 57038688 in words is "fifty-seven million, thirty-eight thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 72 84 96 108 112 126 144 168 189 216 224 252 288 336 378 432 504 672 756 864 1008 1512 2016 3024 6048 9431 18862 28293 37724 56586 66017 75448 84879 113172 132034 150896 169758 198051 226344 254637 264068 301792 339516 396102 452688 509274 528136 594153 679032 792204 905376 1018548 1056272 1188306 1358064 1584408 1782459 2037096 2112544 2376612 2716128 3168816 3564918 4074192 4753224 6337632 7129836 8148384 9506448 14259672 19012896 28519344 57038688