57320478 has 12 divisors (see below), whose sum is σ = 124194408. Its totient is φ = 19106820.

The previous prime is 57320477. The next prime is 57320513. The reversal of 57320478 is 87402375.

57320478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57320477) 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 5 ways as a sum of consecutive naturals, for example, 1592218 + ... + 1592253.

It is an arithmetic number, because the mean of its divisors is an integer number (10349534).

Almost surely, 2^57320478 is an apocalyptic number.

57320478 is an abundant number, since it is smaller than the sum of its proper divisors (66873930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57320478 is a wasteful number, since it uses less digits than its factorization.

57320478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184479 (or 3184476 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 57320478 is about 7571.0288600692. The cubic root of 57320478 is about 385.5700287119.

The spelling of 57320478 in words is "fifty-seven million, three hundred twenty thousand, four hundred seventy-eight".