56722830 has 32 divisors (see below), whose sum is σ = 142055424. Its totient is φ = 14468256.

The previous prime is 56722819. The next prime is 56722871. The reversal of 56722830 is 3822765.

It is a junction number, because it is equal to n+sod(n) for n = 56722791 and 56722800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40414 + ... + 41793.

It is an arithmetic number, because the mean of its divisors is an integer number (4439232).

Almost surely, 2^56722830 is an apocalyptic number.

56722830 is an abundant number, since it is smaller than the sum of its proper divisors (85332594).

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

56722830 is a wasteful number, since it uses less digits than its factorization.

56722830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82240.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 56722830 is about 7531.4560345261. The cubic root of 56722830 is about 384.2253045216.

The spelling of 56722830 in words is "fifty-six million, seven hundred twenty-two thousand, eight hundred thirty".