22744992 has 72 divisors (see below), whose sum is σ = 61846848. Its totient is φ = 7315840.

The previous prime is 22744991. The next prime is 22745027. The reversal of 22744992 is 29944722.

It is a super-2 number, since 2×22744992² = 1034669322160128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22744992.

It is not an unprimeable number, because it can be changed into a prime (22744991) 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, 320317 + ... + 320387.

It is an arithmetic number, because the mean of its divisors is an integer number (858984).

Almost surely, 2^22744992 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 22744992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30923424).

22744992 is an abundant number, since it is smaller than the sum of its proper divisors (39101856).

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

22744992 is an equidigital number, since it uses as much as digits as its factorization.

22744992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 123 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 22744992 is about 4769.1709971441. The cubic root of 22744992 is about 283.3317622366.

The spelling of 22744992 in words is "twenty-two million, seven hundred forty-four thousand, nine hundred ninety-two".