57978392 has 16 divisors (see below), whose sum is σ = 109362960. Its totient is φ = 28814944.

The previous prime is 57978353. The next prime is 57978409. The reversal of 57978392 is 29387975.

It is a happy number.

57978392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57978392² = 6722987877811328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57978392.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20363 + ... + 23034.

It is an arithmetic number, because the mean of its divisors is an integer number (6835185).

Almost surely, 2^57978392 is an apocalyptic number.

It is an amenable number.

57978392 is a deficient number, since it is larger than the sum of its proper divisors (51384568).

57978392 is a wasteful number, since it uses less digits than its factorization.

57978392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43570 (or 43566 counting only the distinct ones).

The product of its digits is 952560, while the sum is 50.

The square root of 57978392 is about 7614.3543390100. The cubic root of 57978392 is about 387.0395880331.

The spelling of 57978392 in words is "fifty-seven million, nine hundred seventy-eight thousand, three hundred ninety-two".