12665238 has 32 divisors (see below), whose sum is σ = 26987904. Its totient is φ = 3948672.

The previous prime is 12665207. The next prime is 12665243. The reversal of 12665238 is 83256621.

It is a junction number, because it is equal to n+sod(n) for n = 12665199 and 12665208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22881 + ... + 23427.

It is an arithmetic number, because the mean of its divisors is an integer number (843372).

Almost surely, 2^12665238 is an apocalyptic number.

12665238 is an abundant number, since it is smaller than the sum of its proper divisors (14322666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12665238 is a wasteful number, since it uses less digits than its factorization.

12665238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its digits is 17280, while the sum is 33.

The square root of 12665238 is about 3558.8253680112. The cubic root of 12665238 is about 233.0975909288.

The spelling of 12665238 in words is "twelve million, six hundred sixty-five thousand, two hundred thirty-eight".