12706238 has 8 divisors (see below), whose sum is σ = 19125288. Its totient is φ = 6331144.

The previous prime is 12706237. The next prime is 12706241. The reversal of 12706238 is 83260721.

It is a happy number.

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

It is a super-2 number, since 2×12706238² = 322896968225288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12706238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12706237) 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, 10256 + ... + 11427.

It is an arithmetic number, because the mean of its divisors is an integer number (2390661).

Almost surely, 2^12706238 is an apocalyptic number.

12706238 is a deficient number, since it is larger than the sum of its proper divisors (6419050).

12706238 is a wasteful number, since it uses less digits than its factorization.

12706238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21978.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12706238 is about 3564.5810413006. The cubic root of 12706238 is about 233.3488484014.

Adding to 12706238 its reverse (83260721), we get a palindrome (95966959).

The spelling of 12706238 in words is "twelve million, seven hundred six thousand, two hundred thirty-eight".