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57688120 = 23571791151
BaseRepresentation
bin1101110000010…
…0000000111000
311000112212020001
43130010000320
5104232004440
65420242344
71300224640
oct334040070
9130485201
1057688120
112a621a36
12173a03b4
13bc4a8a9
147939520
1550e7b9a
hex3704038

57688120 has 64 divisors (see below), whose sum is σ = 149299200. Its totient is φ = 19651200.

The previous prime is 57688079. The next prime is 57688121. The reversal of 57688120 is 2188675.

It is a self number, because there is not a number n which added to its sum of digits gives 57688120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57688121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49545 + ... + 50695.

It is an arithmetic number, because the mean of its divisors is an integer number (2332800).

Almost surely, 257688120 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 57688120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74649600).

57688120 is an abundant number, since it is smaller than the sum of its proper divisors (91611080).

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

57688120 is a wasteful number, since it uses less digits than its factorization.

57688120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 57688120 is about 7595.2695804691. The cubic root of 57688120 is about 386.3925954513.

The spelling of 57688120 in words is "fifty-seven million, six hundred eighty-eight thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 179 280 358 716 895 1151 1253 1432 1790 2302 2506 3580 4604 5012 5755 6265 7160 8057 9208 10024 11510 12530 16114 23020 25060 32228 40285 46040 50120 64456 80570 161140 206029 322280 412058 824116 1030145 1442203 1648232 2060290 2884406 4120580 5768812 7211015 8241160 11537624 14422030 28844060 57688120