57278768 has 20 divisors (see below), whose sum is σ = 116819160. Its totient is φ = 27131904.

The previous prime is 57278761. The next prime is 57278773. The reversal of 57278768 is 86787275.

It is not an unprimeable number, because it can be changed into a prime (57278761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93905 + ... + 94512.

It is an arithmetic number, because the mean of its divisors is an integer number (5840958).

Almost surely, 2^57278768 is an apocalyptic number.

It is an amenable number.

57278768 is an abundant number, since it is smaller than the sum of its proper divisors (59540392).

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

57278768 is a wasteful number, since it uses less digits than its factorization.

57278768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188444 (or 188438 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 50.

The square root of 57278768 is about 7568.2737794031. The cubic root of 57278768 is about 385.4764843172.

The spelling of 57278768 in words is "fifty-seven million, two hundred seventy-eight thousand, seven hundred sixty-eight".