56019904 has 56 divisors (see below), whose sum is σ = 122163840. Its totient is φ = 25369344.

The previous prime is 56019889. The next prime is 56019907. The reversal of 56019904 is 40991065.

56019904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 56019904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56019907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26967 + ... + 28969.

Almost surely, 2^56019904 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 56019904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61081920).

56019904 is an abundant number, since it is smaller than the sum of its proper divisors (66143936).

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

56019904 is a wasteful number, since it uses less digits than its factorization.

56019904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 56019904 is about 7484.6445473382. The cubic root of 56019904 is about 382.6315585452.

The spelling of 56019904 in words is "fifty-six million, nineteen thousand, nine hundred four".