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57379986 = 23223138599
BaseRepresentation
bin1101101011100…
…0110010010010
310222222012112200
43122320302102
5104142124421
65405504030
71264502406
oct332706222
9128865480
1057379986
112a431484
1217272016
13bb70571
147899106
155086726
hex36b8c92

57379986 has 24 divisors (see below), whose sum is σ = 129729600. Its totient is φ = 18294936.

The previous prime is 57379969. The next prime is 57380003. The reversal of 57379986 is 68997375.

57379986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57379969) and next prime (57380003).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 68886 + ... + 69713.

It is an arithmetic number, because the mean of its divisors is an integer number (5405400).

Almost surely, 257379986 is an apocalyptic number.

57379986 is an abundant number, since it is smaller than the sum of its proper divisors (72349614).

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

57379986 is a wasteful number, since it uses less digits than its factorization.

57379986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138630 (or 138627 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 57379986 is about 7574.9578216648. The cubic root of 57379986 is about 385.7034107457.

The spelling of 57379986 in words is "fifty-seven million, three hundred seventy-nine thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 9 18 23 46 69 138 207 414 138599 277198 415797 831594 1247391 2494782 3187777 6375554 9563331 19126662 28689993 57379986