56478720 has 88 divisors (see below), whose sum is σ = 180692784. Its totient is φ = 15056896.

The previous prime is 56478707. The next prime is 56478727. The reversal of 56478720 is 2787465.

It is not an unprimeable number, because it can be changed into a prime (56478727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13522 + ... + 17198.

Almost surely, 2^56478720 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 56478720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90346392).

56478720 is an abundant number, since it is smaller than the sum of its proper divisors (124214064).

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

56478720 is a wasteful number, since it uses less digits than its factorization.

56478720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705 (or 3687 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 56478720 is about 7515.2325313326. The cubic root of 56478720 is about 383.6733332963.

The spelling of 56478720 in words is "fifty-six million, four hundred seventy-eight thousand, seven hundred twenty".