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57068489 = 3161103293
BaseRepresentation
bin1101100110110…
…0101111001001
310222101101020202
43121230233021
5104102142424
65355101545
71262034302
oct331545711
9128341222
1057068489
112a239445
12171418b5
13ba9184a
1478177a9
1550242ae
hex366cbc9

57068489 has 16 divisors (see below), whose sum is σ = 60662784. Its totient is φ = 53611200.

The previous prime is 57068483. The next prime is 57068509. The reversal of 57068489 is 98486075.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57068489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57068483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194627 + ... + 194919.

It is an arithmetic number, because the mean of its divisors is an integer number (3791424).

Almost surely, 257068489 is an apocalyptic number.

It is an amenable number.

57068489 is a deficient number, since it is larger than the sum of its proper divisors (3594295).

57068489 is a wasteful number, since it uses less digits than its factorization.

57068489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 57068489 is about 7554.3688684099. The cubic root of 57068489 is about 385.0041917799.

The spelling of 57068489 in words is "fifty-seven million, sixty-eight thousand, four hundred eighty-nine".

Divisors: 1 31 61 103 293 1891 3193 6283 9083 17873 30179 194773 554063 935549 1840919 57068489