12388434 has 16 divisors (see below), whose sum is σ = 25147488. Its totient is φ = 4067712.

The previous prime is 12388417. The next prime is 12388459. The reversal of 12388434 is 43488321.

It is a junction number, because it is equal to n+sod(n) for n = 12388395 and 12388404.

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, 15007 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (1571718).

Almost surely, 2^12388434 is an apocalyptic number.

12388434 is an abundant number, since it is smaller than the sum of its proper divisors (12759054).

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

12388434 is a wasteful number, since it uses less digits than its factorization.

12388434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30889.

The product of its digits is 18432, while the sum is 33.

The square root of 12388434 is about 3519.7207275578. The cubic root of 12388434 is about 231.3869192573.

The spelling of 12388434 in words is "twelve million, three hundred eighty-eight thousand, four hundred thirty-four".