12445138 has 8 divisors (see below), whose sum is σ = 18713520. Its totient is φ = 6207300.

The previous prime is 12445129. The next prime is 12445151. The reversal of 12445138 is 83154421.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6588 + ... + 8263.

It is an arithmetic number, because the mean of its divisors is an integer number (2339190).

Almost surely, 2^12445138 is an apocalyptic number.

12445138 is a deficient number, since it is larger than the sum of its proper divisors (6268382).

12445138 is a wasteful number, since it uses less digits than its factorization.

12445138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15272.

The product of its digits is 3840, while the sum is 28.

The square root of 12445138 is about 3527.7667156432. The cubic root of 12445138 is about 231.7394146105.

Adding to 12445138 its reverse (83154421), we get a palindrome (95599559).

The spelling of 12445138 in words is "twelve million, four hundred forty-five thousand, one hundred thirty-eight".