56724804 has 72 divisors (see below), whose sum is σ = 152355840. Its totient is φ = 17744832.

The previous prime is 56724793. The next prime is 56724809. The reversal of 56724804 is 40842765.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (56724809) 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 23 ways as a sum of consecutive naturals, for example, 86542 + ... + 87194.

Almost surely, 2^56724804 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 56724804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76177920).

56724804 is an abundant number, since it is smaller than the sum of its proper divisors (95631036).

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

56724804 is a wasteful number, since it uses less digits than its factorization.

56724804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 56724804 is about 7531.5870837427. The cubic root of 56724804 is about 384.2297615862.

The spelling of 56724804 in words is "fifty-six million, seven hundred twenty-four thousand, eight hundred four".