22561180 has 24 divisors (see below), whose sum is σ = 48908160. Its totient is φ = 8733120.

The previous prime is 22561177. The next prime is 22561181. The reversal of 22561180 is 8116522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22561181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17575 + ... + 18814.

It is an arithmetic number, because the mean of its divisors is an integer number (2037840).

Almost surely, 2^22561180 is an apocalyptic number.

22561180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22561180 is an abundant number, since it is smaller than the sum of its proper divisors (26346980).

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

22561180 is a wasteful number, since it uses less digits than its factorization.

22561180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36429 (or 36427 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 22561180 is about 4749.8610505993. The cubic root of 22561180 is about 282.5664552459.

The spelling of 22561180 in words is "twenty-two million, five hundred sixty-one thousand, one hundred eighty".