56215680 has 256 divisors, whose sum is σ = 199756800. Its totient is φ = 13381632.

The previous prime is 56215673. The next prime is 56215697. The reversal of 56215680 is 8651265.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 839007 + ... + 839073.

It is an arithmetic number, because the mean of its divisors is an integer number (780300).

Almost surely, 2^56215680 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 56215680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99878400).

56215680 is an abundant number, since it is smaller than the sum of its proper divisors (143541120).

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

56215680 is a wasteful number, since it uses less digits than its factorization.

56215680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 56215680 is about 7497.7116508972. The cubic root of 56215680 is about 383.0767751884.

The spelling of 56215680 in words is "fifty-six million, two hundred fifteen thousand, six hundred eighty".