56904012 has 96 divisors (see below), whose sum is σ = 169478400. Its totient is φ = 16329600.

The previous prime is 56903999. The next prime is 56904073. The reversal of 56904012 is 21040965.

It is a super-2 number, since 2×56904012² = 6476133163392288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) 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 (27).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 21312 + ... + 23832.

It is an arithmetic number, because the mean of its divisors is an integer number (1765400).

Almost surely, 2^56904012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56904012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84739200).

56904012 is an abundant number, since it is smaller than the sum of its proper divisors (112574388).

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

56904012 is a wasteful number, since it uses less digits than its factorization.

56904012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 56904012 is about 7543.4747961400. The cubic root of 56904012 is about 384.6339625529.

Adding to 56904012 its reverse (21040965), we get a palindrome (77944977).

The spelling of 56904012 in words is "fifty-six million, nine hundred four thousand, twelve".