12189884 has 24 divisors (see below), whose sum is σ = 25814880. Its totient is φ = 4916736.

The previous prime is 12189871. The next prime is 12189907. The reversal of 12189884 is 48898121.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12329 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (1075620).

Almost surely, 2^12189884 is an apocalyptic number.

12189884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12189884 is an abundant number, since it is smaller than the sum of its proper divisors (13624996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12189884 is a wasteful number, since it uses less digits than its factorization.

12189884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25637 (or 25635 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 12189884 is about 3491.4014378183. The cubic root of 12189884 is about 230.1441062888.

The spelling of 12189884 in words is "twelve million, one hundred eighty-nine thousand, eight hundred eighty-four".