22544872 has 16 divisors (see below), whose sum is σ = 48310560. Its totient is φ = 9662064.

The previous prime is 22544869. The next prime is 22544891. The reversal of 22544872 is 27844522.

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, 201238 + ... + 201349.

It is an arithmetic number, because the mean of its divisors is an integer number (3019410).

Almost surely, 2^22544872 is an apocalyptic number.

It is an amenable number.

22544872 is an abundant number, since it is smaller than the sum of its proper divisors (25765688).

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

22544872 is a wasteful number, since it uses less digits than its factorization.

22544872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402600 (or 402596 counting only the distinct ones).

The product of its digits is 35840, while the sum is 34.

The square root of 22544872 is about 4748.1440584717. The cubic root of 22544872 is about 282.4983559045.

The spelling of 22544872 in words is "twenty-two million, five hundred forty-four thousand, eight hundred seventy-two".