22185912 has 32 divisors (see below), whose sum is σ = 63388800. Its totient is φ = 6338784.

The previous prime is 22185907. The next prime is 22185923. The reversal of 22185912 is 21958122.

It is a self number, because there is not a number n which added to its sum of digits gives 22185912.

It is a congruent number.

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, 65862 + ... + 66197.

It is an arithmetic number, because the mean of its divisors is an integer number (1980900).

Almost surely, 2^22185912 is an apocalyptic number.

It is an amenable number.

22185912 is an abundant number, since it is smaller than the sum of its proper divisors (41202888).

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

22185912 is a wasteful number, since it uses less digits than its factorization.

22185912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132075 (or 132071 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 22185912 is about 4710.1923527601. The cubic root of 22185912 is about 280.9910121533.

The spelling of 22185912 in words is "twenty-two million, one hundred eighty-five thousand, nine hundred twelve".