22443880 has 16 divisors (see below), whose sum is σ = 50498820. Its totient is φ = 8977536.

The previous prime is 22443853. The next prime is 22443887. The reversal of 22443880 is 8834422.

It can be written as a sum of positive squares in 2 ways, for example, as 22410756 + 33124 = 4734^2 + 182^2 .

It is not an unprimeable number, because it can be changed into a prime (22443887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280509 + ... + 280588.

Almost surely, 2^22443880 is an apocalyptic number.

22443880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22443880 is an abundant number, since it is smaller than the sum of its proper divisors (28054940).

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

22443880 is a wasteful number, since it uses less digits than its factorization.

22443880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561108 (or 561104 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 22443880 is about 4737.4972295506. The cubic root of 22443880 is about 282.0758979519.

The spelling of 22443880 in words is "twenty-two million, four hundred forty-three thousand, eight hundred eighty".