22255870 has 64 divisors (see below), whose sum is σ = 50714496. Its totient is φ = 6842880.

The previous prime is 22255853. The next prime is 22255889. The reversal of 22255870 is 7855222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33340 + ... + 34000.

It is an arithmetic number, because the mean of its divisors is an integer number (792414).

Almost surely, 2^22255870 is an apocalyptic number.

22255870 is an abundant number, since it is smaller than the sum of its proper divisors (28458626).

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

22255870 is a wasteful number, since it uses less digits than its factorization.

22255870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 22255870 is about 4717.6127437508. The cubic root of 22255870 is about 281.2860483835.

The spelling of 22255870 in words is "twenty-two million, two hundred fifty-five thousand, eight hundred seventy".