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57688858 = 21031931451
BaseRepresentation
bin1101110000010…
…0001100011010
311000112220020101
43130010030122
5104232020413
65420250014
71300230043
oct334041432
9130486211
1057688858
112a622547
12173a090a
13bc4b026
1479398ca
1550e7edd
hex370431a

57688858 has 16 divisors (see below), whose sum is σ = 87886656. Its totient is φ = 28396800.

The previous prime is 57688847. The next prime is 57688879. The reversal of 57688858 is 85888675.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 57688799 and 57688808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39033 + ... + 40483.

It is an arithmetic number, because the mean of its divisors is an integer number (5492916).

Almost surely, 257688858 is an apocalyptic number.

57688858 is a deficient number, since it is larger than the sum of its proper divisors (30197798).

57688858 is a wasteful number, since it uses less digits than its factorization.

57688858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749.

The product of its digits is 4300800, while the sum is 55.

The square root of 57688858 is about 7595.3181631845. The cubic root of 57688858 is about 386.3942431419.

The spelling of 57688858 in words is "fifty-seven million, six hundred eighty-eight thousand, eight hundred fifty-eight".

Divisors: 1 2 103 193 206 386 1451 2902 19879 39758 149453 280043 298906 560086 28844429 57688858