22185272 has 16 divisors (see below), whose sum is σ = 44044560. Its totient is φ = 10440064.

The previous prime is 22185263. The next prime is 22185277. The reversal of 22185272 is 27258122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22185277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81428 + ... + 81699.

It is an arithmetic number, because the mean of its divisors is an integer number (2752785).

Almost surely, 2^22185272 is an apocalyptic number.

It is an amenable number.

22185272 is a deficient number, since it is larger than the sum of its proper divisors (21859288).

22185272 is a wasteful number, since it uses less digits than its factorization.

22185272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163150 (or 163146 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 22185272 is about 4710.1244144927. The cubic root of 22185272 is about 280.9883101987.

The spelling of 22185272 in words is "twenty-two million, one hundred eighty-five thousand, two hundred seventy-two".