12438722 has 8 divisors (see below), whose sum is σ = 19469376. Its totient is φ = 5948932.

The previous prime is 12438721. The next prime is 12438737. The reversal of 12438722 is 22783421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12438721) 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 3 ways as a sum of consecutive naturals, for example, 135158 + ... + 135249.

It is an arithmetic number, because the mean of its divisors is an integer number (2433672).

Almost surely, 2^12438722 is an apocalyptic number.

12438722 is a deficient number, since it is larger than the sum of its proper divisors (7030654).

12438722 is a wasteful number, since it uses less digits than its factorization.

12438722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270432.

The product of its digits is 5376, while the sum is 29.

The square root of 12438722 is about 3526.8572412277. The cubic root of 12438722 is about 231.6995839107.

The spelling of 12438722 in words is "twelve million, four hundred thirty-eight thousand, seven hundred twenty-two".