56388480 has 128 divisors (see below), whose sum is σ = 184187520. Its totient is φ = 14665728.

The previous prime is 56388467. The next prime is 56388487. The reversal of 56388480 is 8488365.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56388487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82219 + ... + 82901.

It is an arithmetic number, because the mean of its divisors is an integer number (1438965).

Almost surely, 2^56388480 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 56388480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92093760).

56388480 is an abundant number, since it is smaller than the sum of its proper divisors (127799040).

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

56388480 is a wasteful number, since it uses less digits than its factorization.

56388480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 56388480 is about 7509.2263249951. The cubic root of 56388480 is about 383.4688837994.

The spelling of 56388480 in words is "fifty-six million, three hundred eighty-eight thousand, four hundred eighty".