22543980 has 48 divisors (see below), whose sum is σ = 63329280. Its totient is φ = 5992128.

The previous prime is 22543951. The next prime is 22543987. The reversal of 22543980 is 8934522.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22543987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36111 + ... + 36729.

It is an arithmetic number, because the mean of its divisors is an integer number (1319360).

Almost surely, 2^22543980 is an apocalyptic number.

22543980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22543980 is an abundant number, since it is smaller than the sum of its proper divisors (40785300).

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

22543980 is a wasteful number, since it uses less digits than its factorization.

22543980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 22543980 is about 4748.0501261044. The cubic root of 22543980 is about 282.4946301222.

The spelling of 22543980 in words is "twenty-two million, five hundred forty-three thousand, nine hundred eighty".