22989312 has 80 divisors (see below), whose sum is σ = 68090880. Its totient is φ = 7658496.

The previous prime is 22989311. The next prime is 22989313. The reversal of 22989312 is 21398922.

It is an interprime number because it is at equal distance from previous prime (22989311) and next prime (22989313).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22989311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12993 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (851136).

Almost surely, 2^22989312 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 22989312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34045440).

22989312 is an abundant number, since it is smaller than the sum of its proper divisors (45101568).

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

22989312 is an equidigital number, since it uses as much as digits as its factorization.

22989312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 1668 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 22989312 is about 4794.7170928012. The cubic root of 22989312 is about 284.3426400726.

The spelling of 22989312 in words is "twenty-two million, nine hundred eighty-nine thousand, three hundred twelve".