22489992 has 48 divisors (see below), whose sum is σ = 69613440. Its totient is φ = 6425568.

The previous prime is 22489991. The next prime is 22490003. The reversal of 22489992 is 29998422.

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 (22489991) 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, 21808 + ... + 22815.

It is an arithmetic number, because the mean of its divisors is an integer number (1450280).

Almost surely, 2^22489992 is an apocalyptic number.

It is an amenable number.

22489992 is an abundant number, since it is smaller than the sum of its proper divisors (47123448).

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

22489992 is a wasteful number, since it uses less digits than its factorization.

22489992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44642 (or 44635 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 22489992 is about 4742.3614370902. The cubic root of 22489992 is about 282.2689451742.

The spelling of 22489992 in words is "twenty-two million, four hundred eighty-nine thousand, nine hundred ninety-two".