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57444942 = 23193713619
BaseRepresentation
bin1101101100100…
…0101001001110
311000002111122110
43123020221032
5104201214232
65411124450
71265162652
oct333105116
9130074573
1057444942
112a476265
12172a3726
13bb93cb9
1478b4a62
15509aacc
hex36c8a4e

57444942 has 32 divisors (see below), whose sum is σ = 124214400. Its totient is φ = 17648928.

The previous prime is 57444931. The next prime is 57444943. The reversal of 57444942 is 24944475.

57444942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×574449422 = 6599842722766728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57444942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57444943) 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, 2592 + ... + 11027.

It is an arithmetic number, because the mean of its divisors is an integer number (3881700).

Almost surely, 257444942 is an apocalyptic number.

57444942 is an abundant number, since it is smaller than the sum of its proper divisors (66769458).

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

57444942 is a wasteful number, since it uses less digits than its factorization.

57444942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13680.

The product of its digits is 161280, while the sum is 39.

The square root of 57444942 is about 7579.2441575661. The cubic root of 57444942 is about 385.8488987724.

The spelling of 57444942 in words is "fifty-seven million, four hundred forty-four thousand, nine hundred forty-two".

Divisors: 1 2 3 6 19 37 38 57 74 111 114 222 703 1406 2109 4218 13619 27238 40857 81714 258761 503903 517522 776283 1007806 1511709 1552566 3023418 9574157 19148314 28722471 57444942