22189665 has 16 divisors (see below), whose sum is σ = 36086976. Its totient is φ = 11640000.

The previous prime is 22189649. The next prime is 22189667. The reversal of 22189665 is 56698122.

It is not a de Polignac number, because 22189665 - 2⁴ = 22189649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22189667) 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, 11211 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (2255436).

Almost surely, 2^22189665 is an apocalyptic number.

It is an amenable number.

22189665 is a deficient number, since it is larger than the sum of its proper divisors (13897311).

22189665 is a wasteful number, since it uses less digits than its factorization.

22189665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24320.

The product of its digits is 51840, while the sum is 39.

The square root of 22189665 is about 4710.5907272868. The cubic root of 22189665 is about 281.0068555379.

The spelling of 22189665 in words is "twenty-two million, one hundred eighty-nine thousand, six hundred sixty-five".