12438530 has 32 divisors (see below), whose sum is σ = 24300864. Its totient is φ = 4556736.

The previous prime is 12438529. The next prime is 12438553. The reversal of 12438530 is 3583421.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 12438530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20897 + ... + 21483.

It is an arithmetic number, because the mean of its divisors is an integer number (759402).

Almost surely, 2^12438530 is an apocalyptic number.

12438530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12438530 is a deficient number, since it is larger than the sum of its proper divisors (11862334).

12438530 is a wasteful number, since it uses less digits than its factorization.

12438530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12438530 is about 3526.8300214215. The cubic root of 12438530 is about 231.6983917585.

The spelling of 12438530 in words is "twelve million, four hundred thirty-eight thousand, five hundred thirty".