56344640 has 56 divisors (see below), whose sum is σ = 146377152. Its totient is φ = 20487680.

The previous prime is 56344601. The next prime is 56344657. The reversal of 56344640 is 4644365.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 56344597 and 56344606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4484 + ... + 11523.

Almost surely, 2^56344640 is an apocalyptic number.

It is an amenable number.

56344640 is an abundant number, since it is smaller than the sum of its proper divisors (90032512).

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

56344640 is a wasteful number, since it uses less digits than its factorization.

56344640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16035 (or 16025 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 56344640 is about 7506.3066817177. The cubic root of 56344640 is about 383.3694803133.

The spelling of 56344640 in words is "fifty-six million, three hundred forty-four thousand, six hundred forty".