57320634 has 64 divisors (see below), whose sum is σ = 142027776. Its totient is φ = 15047424.

The previous prime is 57320621. The next prime is 57320647. The reversal of 57320634 is 43602375.

It is an interprime number because it is at equal distance from previous prime (57320621) and next prime (57320647).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29769 + ... + 31635.

It is an arithmetic number, because the mean of its divisors is an integer number (2219184).

Almost surely, 2^57320634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57320634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71013888).

57320634 is an abundant number, since it is smaller than the sum of its proper divisors (84707142).

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

57320634 is a wasteful number, since it uses less digits than its factorization.

57320634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 57320634 is about 7571.0391624928. The cubic root of 57320634 is about 385.5703784931.

The spelling of 57320634 in words is "fifty-seven million, three hundred twenty thousand, six hundred thirty-four".