22406189 has 12 divisors (see below), whose sum is σ = 24421716. Its totient is φ = 20547072.

The previous prime is 22406177. The next prime is 22406203. The reversal of 22406189 is 98160422.

It can be written as a sum of positive squares in 6 ways, for example, as 550564 + 21855625 = 742^2 + 4675^2 .

It is not a de Polignac number, because 22406189 - 2¹⁶ = 22340653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22406129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32957 + ... + 33629.

It is an arithmetic number, because the mean of its divisors is an integer number (2035143).

Almost surely, 2^22406189 is an apocalyptic number.

It is an amenable number.

22406189 is a deficient number, since it is larger than the sum of its proper divisors (2015527).

22406189 is a wasteful number, since it uses less digits than its factorization.

22406189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 22406189 is about 4733.5176137836. The cubic root of 22406189 is about 281.9179086371.

The spelling of 22406189 in words is "twenty-two million, four hundred six thousand, one hundred eighty-nine".