56866220 has 24 divisors (see below), whose sum is σ = 120539664. Its totient is φ = 22533056.

The previous prime is 56866219. The next prime is 56866223. The reversal of 56866220 is 2266865.

It is not an unprimeable number, because it can be changed into a prime (56866223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11147 + ... + 15426.

It is an arithmetic number, because the mean of its divisors is an integer number (5022486).

Almost surely, 2^56866220 is an apocalyptic number.

It is an amenable number.

56866220 is an abundant number, since it is smaller than the sum of its proper divisors (63673444).

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

56866220 is a wasteful number, since it uses less digits than its factorization.

56866220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26689 (or 26687 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 56866220 is about 7540.9694337002. The cubic root of 56866220 is about 384.5487939484.

The spelling of 56866220 in words is "fifty-six million, eight hundred sixty-six thousand, two hundred twenty".