20223189 has 32 divisors (see below), whose sum is σ = 34689280. Its totient is φ = 11547360.

The previous prime is 20223173. The next prime is 20223193. The reversal of 20223189 is 98132202.

It is a happy number.

It is not a de Polignac number, because 20223189 - 2⁴ = 20223173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14649 + ... + 15969.

It is an arithmetic number, because the mean of its divisors is an integer number (1084040).

Almost surely, 2^20223189 is an apocalyptic number.

It is an amenable number.

20223189 is a deficient number, since it is larger than the sum of its proper divisors (14466091).

20223189 is an frugal number, since it uses more digits than its factorization.

20223189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20223189 is about 4497.0200132977. The cubic root of 20223189 is about 272.4477424130.

The spelling of 20223189 in words is "twenty million, two hundred twenty-three thousand, one hundred eighty-nine".