57280064 has 28 divisors (see below), whose sum is σ = 117335808. Its totient is φ = 27715200.

The previous prime is 57280063. The next prime is 57280103. The reversal of 57280064 is 46008275.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 57280064.

It is not an unprimeable number, because it can be changed into a prime (57280061) 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, 12452 + ... + 16419.

Almost surely, 2^57280064 is an apocalyptic number.

It is an amenable number.

57280064 is an abundant number, since it is smaller than the sum of its proper divisors (60055744).

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

57280064 is a wasteful number, since it uses less digits than its factorization.

57280064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28914 (or 28904 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 57280064 is about 7568.3593995000. The cubic root of 57280064 is about 385.4793915826.

The spelling of 57280064 in words is "fifty-seven million, two hundred eighty thousand, sixty-four".