22444880 has 20 divisors (see below), whose sum is σ = 52184532. Its totient is φ = 8977920.

The previous prime is 22444867. The next prime is 22444883. The reversal of 22444880 is 8844422.

It can be written as a sum of positive squares in 2 ways, for example, as 2446096 + 19998784 = 1564^2 + 4472^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140201 + ... + 140360.

Almost surely, 2^22444880 is an apocalyptic number.

22444880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22444880 is an abundant number, since it is smaller than the sum of its proper divisors (29739652).

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

22444880 is a wasteful number, since it uses less digits than its factorization.

22444880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280574 (or 280568 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 22444880 is about 4737.6027693339. The cubic root of 22444880 is about 282.0800872410.

The spelling of 22444880 in words is "twenty-two million, four hundred forty-four thousand, eight hundred eighty".