57720576 has 72 divisors (see below), whose sum is σ = 162694224. Its totient is φ = 18104320.

The previous prime is 57720571. The next prime is 57720581. The reversal of 57720576 is 67502775.

It is an interprime number because it is at equal distance from previous prime (57720571) and next prime (57720581).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57720571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10846 + ... + 15266.

It is an arithmetic number, because the mean of its divisors is an integer number (2259642).

Almost surely, 2^57720576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57720576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81347112).

57720576 is an abundant number, since it is smaller than the sum of its proper divisors (104973648).

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

57720576 is a wasteful number, since it uses less digits than its factorization.

57720576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457 (or 4443 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 57720576 is about 7597.4058730596. The cubic root of 57720576 is about 386.4650448392.

The spelling of 57720576 in words is "fifty-seven million, seven hundred twenty thousand, five hundred seventy-six".