22089888 has 96 divisors (see below), whose sum is σ = 66265920. Its totient is φ = 7153920.

The previous prime is 22089883. The next prime is 22089911. The reversal of 22089888 is 88898022.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22089883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31623 + ... + 32313.

It is an arithmetic number, because the mean of its divisors is an integer number (690270).

Almost surely, 2^22089888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22089888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33132960).

22089888 is an abundant number, since it is smaller than the sum of its proper divisors (44176032).

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

22089888 is a wasteful number, since it uses less digits than its factorization.

22089888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 22089888 is about 4699.9880850913. The cubic root of 22089888 is about 280.5850352725.

The spelling of 22089888 in words is "twenty-two million, eighty-nine thousand, eight hundred eighty-eight".