20598189 has 8 divisors (see below), whose sum is σ = 27504192. Its totient is φ = 13712160.

The previous prime is 20598187. The next prime is 20598199. The reversal of 20598189 is 98189502.

It is a happy number.

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

It is not a de Polignac number, because 20598189 - 2¹ = 20598187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20598189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20598187) 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, 2392 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (3438024).

Almost surely, 2^20598189 is an apocalyptic number.

It is an amenable number.

20598189 is a deficient number, since it is larger than the sum of its proper divisors (6906003).

20598189 is an equidigital number, since it uses as much as digits as its factorization.

20598189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9987.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 20598189 is about 4538.5227772922. The cubic root of 20598189 is about 274.1214452669.

The spelling of 20598189 in words is "twenty million, five hundred ninety-eight thousand, one hundred eighty-nine".