57728475 has 36 divisors (see below), whose sum is σ = 118172496. Its totient is φ = 26389440.

The previous prime is 57728453. The next prime is 57728497. The reversal of 57728475 is 57482775.

57728475 is a `hidden beast` number, since 577 + 2 + 8 + 4 + 75 = 666.

It is an interprime number because it is at equal distance from previous prime (57728453) and next prime (57728497).

It is not a de Polignac number, because 57728475 - 2⁷ = 57728347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 57728475.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 16752 + ... + 19901.

Almost surely, 2^57728475 is an apocalyptic number.

57728475 is an abundant number, since it is smaller than the sum of its proper divisors (60444021).

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

57728475 is a wasteful number, since it uses less digits than its factorization.

57728475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36676 (or 36668 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 57728475 is about 7597.9257037694. The cubic root of 57728475 is about 386.4826731465.

The spelling of 57728475 in words is "fifty-seven million, seven hundred twenty-eight thousand, four hundred seventy-five".