12129384 has 32 divisors (see below), whose sum is σ = 30971520. Its totient is φ = 3956736.

The previous prime is 12129379. The next prime is 12129407. The reversal of 12129384 is 48392121.

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, 4249 + ... + 6504.

It is an arithmetic number, because the mean of its divisors is an integer number (967860).

Almost surely, 2^12129384 is an apocalyptic number.

It is an amenable number.

12129384 is an abundant number, since it is smaller than the sum of its proper divisors (18842136).

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

12129384 is a wasteful number, since it uses less digits than its factorization.

12129384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10809 (or 10805 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 12129384 is about 3482.7265181177. The cubic root of 12129384 is about 229.7627294784.

The spelling of 12129384 in words is "twelve million, one hundred twenty-nine thousand, three hundred eighty-four".