22989972 has 48 divisors (see below), whose sum is σ = 57802752. Its totient is φ = 7091040.

The previous prime is 22989961. The next prime is 22989977. The reversal of 22989972 is 27998922.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22989977) 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 15 ways as a sum of consecutive naturals, for example, 7213 + ... + 9899.

It is an arithmetic number, because the mean of its divisors is an integer number (1204224).

Almost surely, 2^22989972 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 22989972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28901376).

22989972 is an abundant number, since it is smaller than the sum of its proper divisors (34812780).

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

22989972 is a wasteful number, since it uses less digits than its factorization.

22989972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748 (or 2746 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 22989972 is about 4794.7859180572. The cubic root of 22989972 is about 284.3453611102.

The spelling of 22989972 in words is "twenty-two million, nine hundred eighty-nine thousand, nine hundred seventy-two".