57278082 has 8 divisors (see below), whose sum is σ = 114556176. Its totient is φ = 19092692.

The previous prime is 57278077. The next prime is 57278129. The reversal of 57278082 is 28087275.

It is a sphenic number, since it is the product of 3 distinct primes.

57278082 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 57278082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4773168 + ... + 4773179.

It is an arithmetic number, because the mean of its divisors is an integer number (14319522).

Almost surely, 2^57278082 is an apocalyptic number.

57278082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57278082 is a wasteful number, since it uses less digits than its factorization.

57278082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546352.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 57278082 is about 7568.2284584967. The cubic root of 57278082 is about 385.4749454228.

The spelling of 57278082 in words is "fifty-seven million, two hundred seventy-eight thousand, eighty-two".