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57868019 = 117696841
BaseRepresentation
bin1101110010111…
…1111011110011
311000212222222222
43130233323303
5104303234034
65424151255
71301604266
oct334577363
9130788888
1057868019
112a735110
121746852b
13bcb1741
147984cdd
15513112e
hex372fef3

57868019 has 8 divisors (see below), whose sum is σ = 63220080. Its totient is φ = 52531200.

The previous prime is 57868009. The next prime is 57868073. The reversal of 57868019 is 91086875.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57868019 is a prime.

It is a super-2 number, since 2×578680192 = 6697415245968722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57868009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5039 + ... + 11879.

It is an arithmetic number, because the mean of its divisors is an integer number (7902510).

Almost surely, 257868019 is an apocalyptic number.

57868019 is a deficient number, since it is larger than the sum of its proper divisors (5352061).

57868019 is a wasteful number, since it uses less digits than its factorization.

57868019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7621.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 57868019 is about 7607.1031937262. The cubic root of 57868019 is about 386.7938306314.

The spelling of 57868019 in words is "fifty-seven million, eight hundred sixty-eight thousand, nineteen".

Divisors: 1 11 769 6841 8459 75251 5260729 57868019