57981924 has 144 divisors (see below), whose sum is σ = 196909440. Its totient is φ = 13893120.

The previous prime is 57981887. The next prime is 57981941. The reversal of 57981924 is 42918975.

It is a self number, because there is not a number n which added to its sum of digits gives 57981924.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35232 + ... + 36840.

Almost surely, 2^57981924 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 57981924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98454720).

57981924 is an abundant number, since it is smaller than the sum of its proper divisors (138927516).

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

57981924 is a wasteful number, since it uses less digits than its factorization.

57981924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650 (or 1645 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 57981924 is about 7614.5862658453. The cubic root of 57981924 is about 387.0474472603.

The spelling of 57981924 in words is "fifty-seven million, nine hundred eighty-one thousand, nine hundred twenty-four".