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57130378 = 2191503431
BaseRepresentation
bin1101100111101…
…1110110001010
310222111112010221
43121323312022
5104111133003
65400300254
71262412604
oct331736612
9128445127
1057130378
112a280998
121717168a
13bab3a76
147832174
1550377bd
hex367bd8a

57130378 has 8 divisors (see below), whose sum is σ = 90205920. Its totient is φ = 27061740.

The previous prime is 57130373. The next prime is 57130393. The reversal of 57130378 is 87303175.

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

It is not an unprimeable number, because it can be changed into a prime (57130373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751678 + ... + 751753.

It is an arithmetic number, because the mean of its divisors is an integer number (11275740).

Almost surely, 257130378 is an apocalyptic number.

57130378 is a deficient number, since it is larger than the sum of its proper divisors (33075542).

57130378 is a wasteful number, since it uses less digits than its factorization.

57130378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503452.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 57130378 is about 7558.4639974005. The cubic root of 57130378 is about 385.1433165206.

The spelling of 57130378 in words is "fifty-seven million, one hundred thirty thousand, three hundred seventy-eight".

Divisors: 1 2 19 38 1503431 3006862 28565189 57130378