22044320 has 24 divisors (see below), whose sum is σ = 52080084. Its totient is φ = 8817664.

The previous prime is 22044311. The next prime is 22044353. The reversal of 22044320 is 2344022.

It can be written as a sum of positive squares in 2 ways, for example, as 19044496 + 2999824 = 4364^2 + 1732^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68729 + ... + 69048.

Almost surely, 2^22044320 is an apocalyptic number.

22044320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22044320 is an abundant number, since it is smaller than the sum of its proper divisors (30035764).

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

22044320 is a wasteful number, since it uses less digits than its factorization.

22044320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137792 (or 137784 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22044320 is about 4695.1379106476. The cubic root of 22044320 is about 280.3919680402.

Adding to 22044320 its reverse (2344022), we get a palindrome (24388342).

The spelling of 22044320 in words is "twenty-two million, forty-four thousand, three hundred twenty".