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57830538 = 239638423
BaseRepresentation
bin1101110010011…
…0110010001010
311000211002120210
43130212302022
5104301034123
65423301550
71301360103
oct334466212
9130732523
1057830538
112a709a37
121744a8b6
13bc9a66c
1479753aa
155124e93
hex3726c8a

57830538 has 8 divisors (see below), whose sum is σ = 115661088. Its totient is φ = 19276844.

The previous prime is 57830537. The next prime is 57830543. The reversal of 57830538 is 83503875.

57830538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

57830538 is an admirable number.

It is a super-2 number, since 2×578305382 = 6688742250738888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57830496 and 57830505.

It is not an unprimeable number, because it can be changed into a prime (57830537) 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 3 ways as a sum of consecutive naturals, for example, 4819206 + ... + 4819217.

It is an arithmetic number, because the mean of its divisors is an integer number (14457636).

Almost surely, 257830538 is an apocalyptic number.

57830538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57830538 is a wasteful number, since it uses less digits than its factorization.

57830538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638428.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 57830538 is about 7604.6392419365. The cubic root of 57830538 is about 386.7103040657.

The spelling of 57830538 in words is "fifty-seven million, eight hundred thirty thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 9638423 19276846 28915269 57830538