57974940 has 144 divisors (see below), whose sum is σ = 185902080. Its totient is φ = 15163200.

The previous prime is 57974911. The next prime is 57974941. The reversal of 57974940 is 4947975.

57974940 is a `hidden beast` number, since 579 + 74 + 9 + 4 + 0 = 666.

It is a super-2 number, since 2×57974940² = 6722187336007200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57974941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 383865 + ... + 384015.

Almost surely, 2^57974940 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 57974940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92951040).

57974940 is an abundant number, since it is smaller than the sum of its proper divisors (127927140).

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

57974940 is a wasteful number, since it uses less digits than its factorization.

57974940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 57974940 is about 7614.1276585043. The cubic root of 57974940 is about 387.0319065094.

The spelling of 57974940 in words is "fifty-seven million, nine hundred seventy-four thousand, nine hundred forty".