57278408 has 32 divisors (see below), whose sum is σ = 119892960. Its totient is φ = 25428480.

The previous prime is 57278401. The next prime is 57278447. The reversal of 57278408 is 80487275.

It is not an unprimeable number, because it can be changed into a prime (57278401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3785 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (3746655).

Almost surely, 2^57278408 is an apocalyptic number.

It is an amenable number.

57278408 is an abundant number, since it is smaller than the sum of its proper divisors (62614552).

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

57278408 is a wasteful number, since it uses less digits than its factorization.

57278408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15197 (or 15193 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 57278408 is about 7568.2499958709. The cubic root of 57278408 is about 385.4756767356.

The spelling of 57278408 in words is "fifty-seven million, two hundred seventy-eight thousand, four hundred eight".