22388872 has 48 divisors (see below), whose sum is σ = 46802700. Its totient is φ = 10032000.

The previous prime is 22388857. The next prime is 22388879. The reversal of 22388872 is 27888322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16208676 + 6180196 = 4026^2 + 2486^2 .

It is not an unprimeable number, because it can be changed into a prime (22388879) 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, 97654 + ... + 97882.

Almost surely, 2^22388872 is an apocalyptic number.

22388872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22388872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23401350).

22388872 is an abundant number, since it is smaller than the sum of its proper divisors (24413828).

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

22388872 is a wasteful number, since it uses less digits than its factorization.

22388872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 343 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 22388872 is about 4731.6880708686. The cubic root of 22388872 is about 281.8452615860.

The spelling of 22388872 in words is "twenty-two million, three hundred eighty-eight thousand, eight hundred seventy-two".