22556812 has 12 divisors (see below), whose sum is σ = 39740400. Its totient is φ = 11202416.

The previous prime is 22556803. The next prime is 22556837. The reversal of 22556812 is 21865522.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18328 + ... + 19519.

It is an arithmetic number, because the mean of its divisors is an integer number (3311700).

Almost surely, 2^22556812 is an apocalyptic number.

It is an amenable number.

22556812 is a deficient number, since it is larger than the sum of its proper divisors (17183588).

22556812 is a wasteful number, since it uses less digits than its factorization.

22556812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38000 (or 37998 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 22556812 is about 4749.4012254178. The cubic root of 22556812 is about 282.5482184642.

The spelling of 22556812 in words is "twenty-two million, five hundred fifty-six thousand, eight hundred twelve".