22065872 has 20 divisors (see below), whose sum is σ = 43796676. Its totient is φ = 10763520.

The previous prime is 22065863. The next prime is 22065919. The reversal of 22065872 is 27856022.

It can be written as a sum of positive squares in 2 ways, for example, as 1308736 + 20757136 = 1144^2 + 4556^2 .

It is a congruent number.

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, 16163 + ... + 17474.

Almost surely, 2^22065872 is an apocalyptic number.

It is an amenable number.

22065872 is a deficient number, since it is larger than the sum of its proper divisors (21730804).

22065872 is a wasteful number, since it uses less digits than its factorization.

22065872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33686 (or 33680 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 22065872 is about 4697.4324902014. The cubic root of 22065872 is about 280.4833149180.

The spelling of 22065872 in words is "twenty-two million, sixty-five thousand, eight hundred seventy-two".