12838138 has 16 divisors (see below), whose sum is σ = 19706400. Its totient is φ = 6271056.

The previous prime is 12838127. The next prime is 12838139. The reversal of 12838138 is 83183821.

It is not an unprimeable number, because it can be changed into a prime (12838139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19645 + ... + 20287.

It is an arithmetic number, because the mean of its divisors is an integer number (1231650).

Almost surely, 2^12838138 is an apocalyptic number.

12838138 is a deficient number, since it is larger than the sum of its proper divisors (6868262).

12838138 is a wasteful number, since it uses less digits than its factorization.

12838138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its digits is 9216, while the sum is 34.

The square root of 12838138 is about 3583.0347472499. The cubic root of 12838138 is about 234.1535140907.

It can be divided in two parts, 1283813 and 8, that added together give a palindrome (1283821).

The spelling of 12838138 in words is "twelve million, eight hundred thirty-eight thousand, one hundred thirty-eight".