22206589 has 4 divisors (see below), whose sum is σ = 22238620. Its totient is φ = 22174560.

The previous prime is 22206557. The next prime is 22206601. The reversal of 22206589 is 98560222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7128900 + 15077689 = 2670^2 + 3883^2 .

It is a cyclic number.

It is not a de Polignac number, because 22206589 - 2⁵ = 22206557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22206529) 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, 14952 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (5559655).

Almost surely, 2^22206589 is an apocalyptic number.

It is an amenable number.

22206589 is a deficient number, since it is larger than the sum of its proper divisors (32031).

22206589 is an equidigital number, since it uses as much as digits as its factorization.

22206589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32030.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 22206589 is about 4712.3867625652. The cubic root of 22206589 is about 281.0782784498.

The spelling of 22206589 in words is "twenty-two million, two hundred six thousand, five hundred eighty-nine".