22445889 has 8 divisors (see below), whose sum is σ = 30264480. Its totient is φ = 14795616.

The previous prime is 22445887. The next prime is 22445903. The reversal of 22445889 is 98854422.

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

It is not a de Polignac number, because 22445889 - 2¹ = 22445887 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22445889.

It is not an unprimeable number, because it can be changed into a prime (22445881) 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, 41767 + ... + 42300.

It is an arithmetic number, because the mean of its divisors is an integer number (3783060).

Almost surely, 2^22445889 is an apocalyptic number.

It is an amenable number.

22445889 is a deficient number, since it is larger than the sum of its proper divisors (7818591).

22445889 is an equidigital number, since it uses as much as digits as its factorization.

22445889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84159.

The product of its digits is 184320, while the sum is 42.

The square root of 22445889 is about 4737.7092565923. The cubic root of 22445889 is about 282.0843141077.

The spelling of 22445889 in words is "twenty-two million, four hundred forty-five thousand, eight hundred eighty-nine".