22508889 has 8 divisors (see below), whose sum is σ = 32320512. Its totient is φ = 13851600.

The previous prime is 22508887. The next prime is 22508897. The reversal of 22508889 is 98880522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22508889 - 2¹ = 22508887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22508889.

It is not an unprimeable number, because it can be changed into a prime (22508887) 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, 288537 + ... + 288614.

It is an arithmetic number, because the mean of its divisors is an integer number (4040064).

Almost surely, 2^22508889 is an apocalyptic number.

It is an amenable number.

22508889 is a deficient number, since it is larger than the sum of its proper divisors (9811623).

22508889 is a wasteful number, since it uses less digits than its factorization.

22508889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577167.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 22508889 is about 4744.3533805989. The cubic root of 22508889 is about 282.3479809663.

The spelling of 22508889 in words is "twenty-two million, five hundred eight thousand, eight hundred eighty-nine".