56722320 has 60 divisors (see below), whose sum is σ = 190494876. Its totient is φ = 15125760.

The previous prime is 56722313. The next prime is 56722327. The reversal of 56722320 is 2322765.

It is an interprime number because it is at equal distance from previous prime (56722313) and next prime (56722327).

It can be written as a sum of positive squares in 2 ways, for example, as 14107536 + 42614784 = 3756^2 + 6528^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (56722327) 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, 38671 + ... + 40110.

Almost surely, 2^56722320 is an apocalyptic number.

It is an amenable number.

56722320 is an abundant number, since it is smaller than the sum of its proper divisors (133772556).

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

56722320 is a wasteful number, since it uses less digits than its factorization.

56722320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78800 (or 78791 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 56722320 is about 7531.4221764551. The cubic root of 56722320 is about 384.2241529835.

The spelling of 56722320 in words is "fifty-six million, seven hundred twenty-two thousand, three hundred twenty".