22209672 has 32 divisors (see below), whose sum is σ = 56818080. Its totient is φ = 7230720.

The previous prime is 22209653. The next prime is 22209713. The reversal of 22209672 is 27690222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9729 + ... + 11792.

It is an arithmetic number, because the mean of its divisors is an integer number (1775565).

Almost surely, 2^22209672 is an apocalyptic number.

It is an amenable number.

22209672 is an abundant number, since it is smaller than the sum of its proper divisors (34608408).

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

22209672 is a wasteful number, since it uses less digits than its factorization.

22209672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21573 (or 21569 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 22209672 is about 4712.7138678261. The cubic root of 22209672 is about 281.0912854637.

Adding to 22209672 its reverse (27690222), we get a palindrome (49899894).

The spelling of 22209672 in words is "twenty-two million, two hundred nine thousand, six hundred seventy-two".