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57579138 = 2323198841
BaseRepresentation
bin1101101110100…
…1011010000010
311000100022201200
43123221122002
5104220013023
65414042030
71266262131
oct333513202
9130308650
1057579138
112a558071
1217349316
13bc100c6
14790b918
1550c5743
hex36e9682

57579138 has 12 divisors (see below), whose sum is σ = 124754838. Its totient is φ = 19193040.

The previous prime is 57579131. The next prime is 57579199. The reversal of 57579138 is 83197575.

57579138 is a `hidden beast` number, since 575 + 79 + 1 + 3 + 8 = 666.

57579138 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 only one way, i.e., 52664049 + 4915089 = 7257^2 + 2217^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57579093 and 57579102.

It is not an unprimeable number, because it can be changed into a prime (57579131) 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 5 ways as a sum of consecutive naturals, for example, 1599403 + ... + 1599438.

Almost surely, 257579138 is an apocalyptic number.

57579138 is an abundant number, since it is smaller than the sum of its proper divisors (67175700).

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

57579138 is a wasteful number, since it uses less digits than its factorization.

57579138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198849 (or 3198846 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 57579138 is about 7588.0918550054. The cubic root of 57579138 is about 386.1491231206.

It can be divided in two parts, 5757913 and 8, that added together give a triangular number (5757921 = T3393).

The spelling of 57579138 in words is "fifty-seven million, five hundred seventy-nine thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 9 18 3198841 6397682 9596523 19193046 28789569 57579138