12388432 has 40 divisors (see below), whose sum is σ = 27962496. Its totient is φ = 5206656.

The previous prime is 12388417. The next prime is 12388459. The reversal of 12388432 is 23488321.

It is a junction number, because it is equal to n+sod(n) for n = 12388394 and 12388403.

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, 4893 + ... + 6979.

Almost surely, 2^12388432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12388432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13981248).

12388432 is an abundant number, since it is smaller than the sum of its proper divisors (15574064).

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

12388432 is a wasteful number, since it uses less digits than its factorization.

12388432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2149 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 12388432 is about 3519.7204434443. The cubic root of 12388432 is about 231.3869068055.

The spelling of 12388432 in words is "twelve million, three hundred eighty-eight thousand, four hundred thirty-two".