22390992 has 120 divisors (see below), whose sum is σ = 70141344. Its totient is φ = 6873984.

The previous prime is 22390981. The next prime is 22390997. The reversal of 22390992 is 29909322.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22390997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50323 + ... + 50765.

Almost surely, 2^22390992 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 22390992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35070672).

22390992 is an abundant number, since it is smaller than the sum of its proper divisors (47750352).

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

22390992 is a wasteful number, since it uses less digits than its factorization.

22390992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 22390992 is about 4731.9120870954. The cubic root of 22390992 is about 281.8541572716.

The spelling of 22390992 in words is "twenty-two million, three hundred ninety thousand, nine hundred ninety-two".