56281322304 has 84 divisors (see below), whose sum is σ = 161948379684. Its totient is φ = 18687393792.

The previous prime is 56281322297. The next prime is 56281322309. The reversal of 56281322304 is 40322318265.

56281322304 is a `hidden beast` number, since 5 + 6 + 28 + 1 + 322 + 304 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32703105600 + 23578216704 = 180840^2 + 153552^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56281322309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42067 + ... + 338130.

It is an arithmetic number, because the mean of its divisors is an integer number (1927956901).

Almost surely, 2^56281322304 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 56281322304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80974189842).

56281322304 is an abundant number, since it is smaller than the sum of its proper divisors (105667057380).

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

56281322304 is a wasteful number, since it uses less digits than its factorization.

56281322304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380472 (or 380459 counting only the distinct ones).

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

The spelling of 56281322304 in words is "fifty-six billion, two hundred eighty-one million, three hundred twenty-two thousand, three hundred four".