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57738139 = 197293087
BaseRepresentation
bin1101110001000…
…0001110011011
311000122101211121
43130100032123
5104240110024
65421310111
71300523524
oct334201633
9130571747
1057738139
112a656578
1217405337
13bc675a4
14794d84b
1551078e4
hex371039b

57738139 has 4 divisors (see below), whose sum is σ = 58031424. Its totient is φ = 57444856.

The previous prime is 57738133. The next prime is 57738173. The reversal of 57738139 is 93183775.

57738139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57738139 - 27 = 57738011 is a prime.

It is a super-3 number, since 3×577381393 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57738095 and 57738104.

It is not an unprimeable number, because it can be changed into a prime (57738133) 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 3 ways as a sum of consecutive naturals, for example, 146347 + ... + 146740.

It is an arithmetic number, because the mean of its divisors is an integer number (14507856).

Almost surely, 257738139 is an apocalyptic number.

57738139 is a deficient number, since it is larger than the sum of its proper divisors (293285).

57738139 is a wasteful number, since it uses less digits than its factorization.

57738139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293284.

The product of its digits is 158760, while the sum is 43.

The square root of 57738139 is about 7598.5616402053. The cubic root of 57738139 is about 386.5042382415.

The spelling of 57738139 in words is "fifty-seven million, seven hundred thirty-eight thousand, one hundred thirty-nine".

Divisors: 1 197 293087 57738139