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57232689 = 3294611427
BaseRepresentation
bin1101101001010…
…0110100110001
310222200201111020
43122110310301
5104122421224
65402410053
71263320103
oct332246461
9128621436
1057232689
112a340848
1217200929
13bb1b4c7
14785b573
155057c79
hex3694d31

57232689 has 16 divisors (see below), whose sum is σ = 79168320. Its totient is φ = 36733760.

The previous prime is 57232667. The next prime is 57232741. The reversal of 57232689 is 98623275.

57232689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 57232689 - 212 = 57228593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57232689.

It is not an unprimeable number, because it can be changed into a prime (57232649) 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 15 ways as a sum of consecutive naturals, for example, 39394 + ... + 40820.

It is an arithmetic number, because the mean of its divisors is an integer number (4948020).

Almost surely, 257232689 is an apocalyptic number.

It is an amenable number.

57232689 is a deficient number, since it is larger than the sum of its proper divisors (21935631).

57232689 is a wasteful number, since it uses less digits than its factorization.

57232689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920.

The product of its digits is 181440, while the sum is 42.

The square root of 57232689 is about 7565.2289456434. The cubic root of 57232689 is about 385.3730886101.

The spelling of 57232689 in words is "fifty-seven million, two hundred thirty-two thousand, six hundred eighty-nine".

Divisors: 1 3 29 87 461 1383 1427 4281 13369 40107 41383 124149 657847 1973541 19077563 57232689