12399504 has 80 divisors (see below), whose sum is σ = 35664384. Its totient is φ = 3686400.

The previous prime is 12399503. The next prime is 12399539. The reversal of 12399504 is 40599321.

12399504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12399503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19024 + ... + 19664.

Almost surely, 2^12399504 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 12399504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17832192).

12399504 is an abundant number, since it is smaller than the sum of its proper divisors (23264880).

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

12399504 is a wasteful number, since it uses less digits than its factorization.

12399504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 12399504 is about 3521.2929443601. The cubic root of 12399504 is about 231.4558192927.

The spelling of 12399504 in words is "twelve million, three hundred ninety-nine thousand, five hundred four".