22015189 has 4 divisors (see below), whose sum is σ = 25160224. Its totient is φ = 18870156.

The previous prime is 22015157. The next prime is 22015207. The reversal of 22015189 is 98151022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22015189 - 2⁵ = 22015157 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 (22015589) 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, 1572507 + ... + 1572520.

It is an arithmetic number, because the mean of its divisors is an integer number (6290056).

Almost surely, 2^22015189 is an apocalyptic number.

It is an amenable number.

22015189 is a deficient number, since it is larger than the sum of its proper divisors (3145035).

22015189 is an equidigital number, since it uses as much as digits as its factorization.

22015189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145034.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 22015189 is about 4692.0346332908. The cubic root of 22015189 is about 280.2684033451.

The spelling of 22015189 in words is "twenty-two million, fifteen thousand, one hundred eighty-nine".