23982189 has 64 divisors (see below), whose sum is σ = 43794432. Its totient is φ = 11289600.

The previous prime is 23982187. The next prime is 23982193. The reversal of 23982189 is 98128932.

It is not a de Polignac number, because 23982189 - 2¹ = 23982187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23982189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23982187) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 121639 + ... + 121835.

It is an arithmetic number, because the mean of its divisors is an integer number (684288).

Almost surely, 2^23982189 is an apocalyptic number.

23982189 is the 2618-th nonagonal number.

It is an amenable number.

23982189 is a deficient number, since it is larger than the sum of its proper divisors (19812243).

23982189 is a wasteful number, since it uses less digits than its factorization.

23982189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its digits is 62208, while the sum is 42.

The square root of 23982189 is about 4897.1613206020. The cubic root of 23982189 is about 288.3785411052.

It can be divided in two parts, 239 and 82189, that added together give a palindrome (82428).

The spelling of 23982189 in words is "twenty-three million, nine hundred eighty-two thousand, one hundred eighty-nine".