12438306 has 16 divisors (see below), whose sum is σ = 27640800. Its totient is φ = 4146084.

The previous prime is 12438301. The next prime is 12438311. The reversal of 12438306 is 60383421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12438301) and next prime (12438311).

It is a super-2 number, since 2×12438306² = 309422912299272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12438306.

It is not an unprimeable number, because it can be changed into a prime (12438301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115116 + ... + 115223.

It is an arithmetic number, because the mean of its divisors is an integer number (1727550).

Almost surely, 2^12438306 is an apocalyptic number.

12438306 is an abundant number, since it is smaller than the sum of its proper divisors (15202494).

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

12438306 is a wasteful number, since it uses less digits than its factorization.

12438306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230350 (or 230344 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12438306 is about 3526.7982647155. The cubic root of 12438306 is about 231.6970008988.

The spelling of 12438306 in words is "twelve million, four hundred thirty-eight thousand, three hundred six".