12393238 has 32 divisors (see below), whose sum is σ = 23133600. Its totient is φ = 4892160.

The previous prime is 12393233. The next prime is 12393239. The reversal of 12393238 is 83239321.

Its product of digits (7776) is a multiple of the sum of its prime divisors (2592).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12393233) 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 15 ways as a sum of consecutive naturals, for example, 3588 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (722925).

Almost surely, 2^12393238 is an apocalyptic number.

12393238 is a deficient number, since it is larger than the sum of its proper divisors (10740362).

12393238 is a wasteful number, since it uses less digits than its factorization.

12393238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592.

The product of its digits is 7776, while the sum is 31.

The square root of 12393238 is about 3520.4031019189. The cubic root of 12393238 is about 231.4168245466.

The spelling of 12393238 in words is "twelve million, three hundred ninety-three thousand, two hundred thirty-eight".