57947988 has 72 divisors (see below), whose sum is σ = 158642400. Its totient is φ = 16414272.

The previous prime is 57947969. The next prime is 57948013. The reversal of 57947988 is 88974975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81378 + ... + 82086.

Almost surely, 2^57947988 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 57947988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79321200).

57947988 is an abundant number, since it is smaller than the sum of its proper divisors (100694412).

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

57947988 is a wasteful number, since it uses less digits than its factorization.

57947988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 860 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The square root of 57947988 is about 7612.3575848747. The cubic root of 57947988 is about 386.9719213916.

The spelling of 57947988 in words is "fifty-seven million, nine hundred forty-seven thousand, nine hundred eighty-eight".