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57512672 = 257243853
BaseRepresentation
bin1101101101100…
…1001011100000
311000012221112222
43123121023200
5104210401142
65412410212
71265564300
oct333311340
9130187488
1057512672
112a512138
1217316968
13bbb8a89
1478d1600
1550b0bd2
hex36d92e0

57512672 has 72 divisors (see below), whose sum is σ = 134935416. Its totient is φ = 24046848.

The previous prime is 57512671. The next prime is 57512687. The reversal of 57512672 is 27621575.

It is a happy number.

57512672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57512671) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 66998 + ... + 67850.

It is an arithmetic number, because the mean of its divisors is an integer number (1874103).

Almost surely, 257512672 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 57512672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67467708).

57512672 is an abundant number, since it is smaller than the sum of its proper divisors (77422744).

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

57512672 is a wasteful number, since it uses less digits than its factorization.

57512672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 905 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 57512672 is about 7583.7109649564. The cubic root of 57512672 is about 386.0004832338. Note that the first 3 decimals are identical.

The spelling of 57512672 in words is "fifty-seven million, five hundred twelve thousand, six hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 28 32 43 49 56 86 98 112 172 196 224 301 344 392 602 688 784 853 1204 1376 1568 1706 2107 2408 3412 4214 4816 5971 6824 8428 9632 11942 13648 16856 23884 27296 33712 36679 41797 47768 67424 73358 83594 95536 146716 167188 191072 256753 293432 334376 513506 586864 668752 1027012 1173728 1337504 1797271 2054024 3594542 4108048 7189084 8216096 14378168 28756336 57512672