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57839709 = 381123773
BaseRepresentation
bin1101110010100…
…1000001011101
311000211120011110
43130221001131
5104301332314
65423412233
71301425614
oct334510135
9130746143
1057839709
112a715914
1217454079
13bca18a5
14797887b
155127a59
hex372905d

57839709 has 8 divisors (see below), whose sum is σ = 77217952. Its totient is φ = 38510640.

The previous prime is 57839699. The next prime is 57839711. The reversal of 57839709 is 90793875.

57839709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 57839709 - 219 = 57315421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57839809) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9454 + ... + 14319.

It is an arithmetic number, because the mean of its divisors is an integer number (9652244).

Almost surely, 257839709 is an apocalyptic number.

It is an amenable number.

57839709 is a deficient number, since it is larger than the sum of its proper divisors (19378243).

57839709 is a wasteful number, since it uses less digits than its factorization.

57839709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24587.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 57839709 is about 7605.2422052161. The cubic root of 57839709 is about 386.7307450119.

The spelling of 57839709 in words is "fifty-seven million, eight hundred thirty-nine thousand, seven hundred nine".

Divisors: 1 3 811 2433 23773 71319 19279903 57839709