56768220 has 72 divisors (see below), whose sum is σ = 173287296. Its totient is φ = 15042432.

The previous prime is 56768203. The next prime is 56768233. The reversal of 56768220 is 2286765.

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 23 ways as a sum of consecutive naturals, for example, 30229 + ... + 32051.

It is an arithmetic number, because the mean of its divisors is an integer number (2406768).

Almost surely, 2^56768220 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 56768220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86643648).

56768220 is an abundant number, since it is smaller than the sum of its proper divisors (116519076).

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

56768220 is a wasteful number, since it uses less digits than its factorization.

56768220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 56768220 is about 7534.4687934850. The cubic root of 56768220 is about 384.3277637769.

The spelling of 56768220 in words is "fifty-six million, seven hundred sixty-eight thousand, two hundred twenty".