22255872 has 36 divisors (see below), whose sum is σ = 59235120. Its totient is φ = 7418368.

The previous prime is 22255853. The next prime is 22255889. The reversal of 22255872 is 27855222.

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, 13722 + ... + 15257.

It is an arithmetic number, because the mean of its divisors is an integer number (1645420).

Almost surely, 2^22255872 is an apocalyptic number.

It is an amenable number.

22255872 is an abundant number, since it is smaller than the sum of its proper divisors (36979248).

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

22255872 is an equidigital number, since it uses as much as digits as its factorization.

22255872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28998 (or 28984 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 22255872 is about 4717.6129557224. The cubic root of 22255872 is about 281.2860568093.

The spelling of 22255872 in words is "twenty-two million, two hundred fifty-five thousand, eight hundred seventy-two".