23500189 has 4 divisors (see below), whose sum is σ = 23885500. Its totient is φ = 23114880.

The previous prime is 23500187. The next prime is 23500223. The reversal of 23500189 is 98100532.

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 412164 + 23088025 = 642^2 + 4805^2 .

It is a cyclic number.

It is not a de Polignac number, because 23500189 - 2¹ = 23500187 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 (23500187) 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, 192564 + ... + 192685.

It is an arithmetic number, because the mean of its divisors is an integer number (5971375).

Almost surely, 2^23500189 is an apocalyptic number.

It is an amenable number.

23500189 is a deficient number, since it is larger than the sum of its proper divisors (385311).

23500189 is an equidigital number, since it uses as much as digits as its factorization.

23500189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385310.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 23500189 is about 4847.6993512387. The cubic root of 23500189 is about 286.4334836805.

The spelling of 23500189 in words is "twenty-three million, five hundred thousand, one hundred eighty-nine".