22089984 has 108 divisors (see below), whose sum is σ = 68506704. Its totient is φ = 6300672.

The previous prime is 22089983. The next prime is 22090001. The reversal of 22089984 is 48998022.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (22089983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37339 + ... + 37925.

Almost surely, 2^22089984 is an apocalyptic number.

22089984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22089984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34253352).

22089984 is an abundant number, since it is smaller than the sum of its proper divisors (46416720).

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

22089984 is an equidigital number, since it uses as much as digits as its factorization.

22089984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 22089984 is about 4699.9982978720. The cubic root of 22089984 is about 280.5854417349.

The spelling of 22089984 in words is "twenty-two million, eighty-nine thousand, nine hundred eighty-four".