56330640 has 100 divisors (see below), whose sum is σ = 195667164. Its totient is φ = 15019776.

The previous prime is 56330621. The next prime is 56330653. The reversal of 56330640 is 4603365.

It can be written as a sum of positive squares in 2 ways, for example, as 10036224 + 46294416 = 3168^2 + 6804^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2134 + ... + 10826.

Almost surely, 2^56330640 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 56330640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97833582).

56330640 is an abundant number, since it is smaller than the sum of its proper divisors (139336524).

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

56330640 is a wasteful number, since it uses less digits than its factorization.

56330640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8718 (or 8703 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 56330640 is about 7505.3740746215. The cubic root of 56330640 is about 383.3377256376.

The spelling of 56330640 in words is "fifty-six million, three hundred thirty thousand, six hundred forty".