56428312320 has 108 divisors (see below), whose sum is σ = 195236122536. Its totient is φ = 15047546880.

The previous prime is 56428312301. The next prime is 56428312357. The reversal of 56428312320 is 2321382465.

56428312320 is a `hidden beast` number, since 5 + 642 + 8 + 3 + 1 + 2 + 3 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2437626 + ... + 2460665.

Almost surely, 2^56428312320 is an apocalyptic number.

It is an amenable number.

56428312320 is an abundant number, since it is smaller than the sum of its proper divisors (138807810216).

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

56428312320 is a wasteful number, since it uses less digits than its factorization.

56428312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898318 (or 4898301 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 56428312320 its reverse (2321382465), we get a palindrome (58749694785).

The spelling of 56428312320 in words is "fifty-six billion, four hundred twenty-eight million, three hundred twelve thousand, three hundred twenty".