57440880 has 320 divisors, whose sum is σ = 235699200. Its totient is φ = 12579840.

The previous prime is 57440879. The next prime is 57440891. The reversal of 57440880 is 8804475.

57440880 is a `hidden beast` number, since 574 + 4 + 0 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 438415 + ... + 438545.

It is an arithmetic number, because the mean of its divisors is an integer number (736560).

Almost surely, 2^57440880 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 57440880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117849600).

57440880 is an abundant number, since it is smaller than the sum of its proper divisors (178258320).

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

57440880 is a wasteful number, since it uses less digits than its factorization.

57440880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 57440880 is about 7578.9761841557. The cubic root of 57440880 is about 385.8398039469.

The spelling of 57440880 in words is "fifty-seven million, four hundred forty thousand, eight hundred eighty".