22188265 has 16 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 15966720.

The previous prime is 22188263. The next prime is 22188289. The reversal of 22188265 is 56288122.

It is not a de Polignac number, because 22188265 - 2¹ = 22188263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22188265.

It is not an unprimeable number, because it can be changed into a prime (22188263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3256 + ... + 7414.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^22188265 is an apocalyptic number.

It is an amenable number.

22188265 is a deficient number, since it is larger than the sum of its proper divisors (7164695).

22188265 is a wasteful number, since it uses less digits than its factorization.

22188265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272.

The product of its digits is 15360, while the sum is 34.

The square root of 22188265 is about 4710.4421236228. The cubic root of 22188265 is about 281.0009456113. Note that the first 3 decimals are identical.

The spelling of 22188265 in words is "twenty-two million, one hundred eighty-eight thousand, two hundred sixty-five".