56404720 has 60 divisors (see below), whose sum is σ = 134194536. Its totient is φ = 22048000.

The previous prime is 56404703. The next prime is 56404753. The reversal of 56404720 is 2740465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224595 + ... + 224845.

Almost surely, 2^56404720 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 56404720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67097268).

56404720 is an abundant number, since it is smaller than the sum of its proper divisors (77789816).

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

56404720 is a wasteful number, since it uses less digits than its factorization.

56404720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 56404720 is about 7510.3075835814. The cubic root of 56404720 is about 383.5056935456.

The spelling of 56404720 in words is "fifty-six million, four hundred four thousand, seven hundred twenty".