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57028127 = 1331141509
BaseRepresentation
bin1101100110001…
…0111000011111
310222022022212212
43121202320133
5104044400002
65354151035
71261505522
oct331427037
9128268785
1057028127
112a211092
121712247b
13ba79370
147806bb9
155017352
hex3662e1f

57028127 has 8 divisors (see below), whose sum is σ = 63396480. Its totient is φ = 50942880.

The previous prime is 57028117. The next prime is 57028141. The reversal of 57028127 is 72182075.

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

It is a cyclic number.

It is not a de Polignac number, because 57028127 - 28 = 57027871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57028093 and 57028102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57028117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70352 + ... + 71157.

It is an arithmetic number, because the mean of its divisors is an integer number (7924560).

Almost surely, 257028127 is an apocalyptic number.

57028127 is a deficient number, since it is larger than the sum of its proper divisors (6368353).

57028127 is a wasteful number, since it uses less digits than its factorization.

57028127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141553.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 57028127 is about 7551.6969616107. The cubic root of 57028127 is about 384.9134049354.

The spelling of 57028127 in words is "fifty-seven million, twenty-eight thousand, one hundred twenty-seven".

Divisors: 1 13 31 403 141509 1839617 4386779 57028127