22718189 has 8 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 20928816.

The previous prime is 22718183. The next prime is 22718209. The reversal of 22718189 is 98181722.

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

It is a cyclic number.

It is not a de Polignac number, because 22718189 - 2¹² = 22714093 is a prime.

It is a super-2 number, since 2×22718189² = 1032232222879442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22718183) 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, 6452 + ... + 9330.

It is an arithmetic number, because the mean of its divisors is an integer number (3064320).

Almost surely, 2^22718189 is an apocalyptic number.

It is an amenable number.

22718189 is a deficient number, since it is larger than the sum of its proper divisors (1796371).

22718189 is a wasteful number, since it uses less digits than its factorization.

22718189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499.

The product of its digits is 16128, while the sum is 38.

The square root of 22718189 is about 4766.3601416595. The cubic root of 22718189 is about 283.2204245234.

The spelling of 22718189 in words is "twenty-two million, seven hundred eighteen thousand, one hundred eighty-nine".