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57032668 = 2273113779
BaseRepresentation
bin1101100110001…
…1111111011100
310222022120010001
43121203333130
5104100021133
65354224044
71261525000
oct331437734
9128276101
1057032668
112a214540
1217125024
13ba7b454
147808700
15501887d
hex3663fdc

57032668 has 48 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 22214640.

The previous prime is 57032639. The next prime is 57032683. The reversal of 57032668 is 86623075.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13203 + ... + 16981.

It is an arithmetic number, because the mean of its divisors is an integer number (2646000).

Almost surely, 257032668 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 57032668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63504000).

57032668 is an abundant number, since it is smaller than the sum of its proper divisors (69975332).

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

57032668 is a wasteful number, since it uses less digits than its factorization.

57032668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815 (or 3799 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 57032668 is about 7551.9976165250. The cubic root of 57032668 is about 384.9236212121.

The spelling of 57032668 in words is "fifty-seven million, thirty-two thousand, six hundred sixty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 49 77 98 154 196 308 343 539 686 1078 1372 2156 3773 3779 7546 7558 15092 15116 26453 41569 52906 83138 105812 166276 185171 290983 370342 581966 740684 1163932 1296197 2036881 2592394 4073762 5184788 8147524 14258167 28516334 57032668