12708138 has 8 divisors (see below), whose sum is σ = 25416288. Its totient is φ = 4236044.

The previous prime is 12708127. The next prime is 12708139. The reversal of 12708138 is 83180721.

It is a happy number.

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

12708138 is an admirable number.

It is a super-2 number, since 2×12708138² = 322993542854088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12708139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059006 + ... + 1059017.

It is an arithmetic number, because the mean of its divisors is an integer number (3177036).

Almost surely, 2^12708138 is an apocalyptic number.

12708138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12708138 is a wasteful number, since it uses less digits than its factorization.

12708138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118028.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 12708138 is about 3564.8475423221. The cubic root of 12708138 is about 233.3604789280.

Adding to 12708138 its reverse (83180721), we get a palindrome (95888859).

The spelling of 12708138 in words is "twelve million, seven hundred eight thousand, one hundred thirty-eight".