57911680 has 64 divisors (see below), whose sum is σ = 141886080. Its totient is φ = 22589440.

The previous prime is 57911663. The next prime is 57911699. The reversal of 57911680 is 8611975.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25137 + ... + 27343.

It is an arithmetic number, because the mean of its divisors is an integer number (2216970).

Almost surely, 2^57911680 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 57911680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70943040).

57911680 is an abundant number, since it is smaller than the sum of its proper divisors (83974400).

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

57911680 is a wasteful number, since it uses less digits than its factorization.

57911680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 57911680 is about 7609.9724046806. The cubic root of 57911680 is about 386.8910838885.

The spelling of 57911680 in words is "fifty-seven million, nine hundred eleven thousand, six hundred eighty".