22981880 has 16 divisors (see below), whose sum is σ = 51709320. Its totient is φ = 9192736.

The previous prime is 22981879. The next prime is 22981883. The reversal of 22981880 is 8818922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22981883) 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, 287234 + ... + 287313.

Almost surely, 2^22981880 is an apocalyptic number.

22981880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22981880 is an abundant number, since it is smaller than the sum of its proper divisors (28727440).

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

22981880 is a wasteful number, since it uses less digits than its factorization.

22981880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574558 (or 574554 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 22981880 is about 4793.9420104962. The cubic root of 22981880 is about 284.3119959445.

The spelling of 22981880 in words is "twenty-two million, nine hundred eighty-one thousand, eight hundred eighty".