56722780 has 12 divisors (see below), whose sum is σ = 119117880. Its totient is φ = 22689104.

The previous prime is 56722759. The next prime is 56722789. The reversal of 56722780 is 8722765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56722789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418050 + ... + 1418089.

It is an arithmetic number, because the mean of its divisors is an integer number (9926490).

Almost surely, 2^56722780 is an apocalyptic number.

It is an amenable number.

56722780 is an abundant number, since it is smaller than the sum of its proper divisors (62395100).

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

56722780 is a wasteful number, since it uses less digits than its factorization.

56722780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836148 (or 2836146 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 56722780 is about 7531.4527151141. The cubic root of 56722780 is about 384.2251916260.

The spelling of 56722780 in words is "fifty-six million, seven hundred twenty-two thousand, seven hundred eighty".