56723520 has 224 divisors, whose sum is σ = 215359488. Its totient is φ = 12367872.

The previous prime is 56723477. The next prime is 56723539. The reversal of 56723520 is 2532765.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 154377 + ... + 154743.

Almost surely, 2^56723520 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 56723520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107679744).

56723520 is an abundant number, since it is smaller than the sum of its proper divisors (158635968).

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

56723520 is a wasteful number, since it uses less digits than its factorization.

56723520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 56723520 is about 7531.5018422623. The cubic root of 56723520 is about 384.2268624738.

The spelling of 56723520 in words is "fifty-six million, seven hundred twenty-three thousand, five hundred twenty".