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57000680 = 23511211777
BaseRepresentation
bin1101100101110…
…0001011101000
310222020221020022
43121130023220
5104043010210
65353420012
71261332512
oct331341350
9128227208
1057000680
112a1a2500
121710a608
13ba69a19
1477dabb2
15500e155
hex365c2e8

57000680 has 48 divisors (see below), whose sum is σ = 140982660. Its totient is φ = 20725760.

The previous prime is 57000679. The next prime is 57000709. The reversal of 57000680 is 8600075.

57000680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56942116 + 58564 = 7546^2 + 242^2 .

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 11 ways as a sum of consecutive naturals, for example, 1049 + ... + 10728.

Almost surely, 257000680 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 57000680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70491330).

57000680 is an abundant number, since it is smaller than the sum of its proper divisors (83981980).

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

57000680 is a wasteful number, since it uses less digits than its factorization.

57000680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11810 (or 11795 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 57000680 is about 7549.8794692366. The cubic root of 57000680 is about 384.8516435197.

The spelling of 57000680 in words is "fifty-seven million, six hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 121 220 242 440 484 605 968 1210 2420 4840 11777 23554 47108 58885 94216 117770 129547 235540 259094 471080 518188 647735 1036376 1295470 1425017 2590940 2850034 5181880 5700068 7125085 11400136 14250170 28500340 57000680