12439288 has 16 divisors (see below), whose sum is σ = 23363280. Its totient is φ = 6209088.

The previous prime is 12439283. The next prime is 12439321. The reversal of 12439288 is 88293421.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6220 + ... + 7972.

It is an arithmetic number, because the mean of its divisors is an integer number (1460205).

Almost surely, 2^12439288 is an apocalyptic number.

It is an amenable number.

12439288 is a deficient number, since it is larger than the sum of its proper divisors (10923992).

12439288 is a wasteful number, since it uses less digits than its factorization.

12439288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646 (or 2642 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 12439288 is about 3526.9374817255. The cubic root of 12439288 is about 231.7030982047.

The spelling of 12439288 in words is "twelve million, four hundred thirty-nine thousand, two hundred eighty-eight".