57478784 has 32 divisors (see below), whose sum is σ = 124921440. Its totient is φ = 26126080.

The previous prime is 57478769. The next prime is 57478789. The reversal of 57478784 is 48787475.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×57478784² = 6607621220237312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57478789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19004 + ... + 21819.

It is an arithmetic number, because the mean of its divisors is an integer number (3903795).

Almost surely, 2^57478784 is an apocalyptic number.

It is an amenable number.

57478784 is an abundant number, since it is smaller than the sum of its proper divisors (67442656).

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

57478784 is a wasteful number, since it uses less digits than its factorization.

57478784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40848 (or 40836 counting only the distinct ones).

The product of its digits is 1756160, while the sum is 50.

The square root of 57478784 is about 7581.4763733721. The cubic root of 57478784 is about 385.9246544124.

The spelling of 57478784 in words is "fifty-seven million, four hundred seventy-eight thousand, seven hundred eighty-four".