22189916 has 24 divisors (see below), whose sum is σ = 44555616. Its totient is φ = 9472320.

The previous prime is 22189877. The next prime is 22189919. The reversal of 22189916 is 61998122.

It is a self number, because there is not a number n which added to its sum of digits gives 22189916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22189919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6326 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (1856484).

Almost surely, 2^22189916 is an apocalyptic number.

It is an amenable number.

22189916 is an abundant number, since it is smaller than the sum of its proper divisors (22365700).

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

22189916 is a wasteful number, since it uses less digits than its factorization.

22189916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149 (or 3147 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 22189916 is about 4710.6173693052. The cubic root of 22189916 is about 281.0079150770.

The spelling of 22189916 in words is "twenty-two million, one hundred eighty-nine thousand, nine hundred sixteen".