12879138 has 8 divisors (see below), whose sum is σ = 25758288. Its totient is φ = 4293044.

The previous prime is 12879137. The next prime is 12879151. The reversal of 12879138 is 83197821.

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

12879138 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12879096 and 12879105.

It is not an unprimeable number, because it can be changed into a prime (12879137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073256 + ... + 1073267.

It is an arithmetic number, because the mean of its divisors is an integer number (3219786).

Almost surely, 2^12879138 is an apocalyptic number.

12879138 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.

12879138 is a wasteful number, since it uses less digits than its factorization.

12879138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146528.

The product of its digits is 24192, while the sum is 39.

The square root of 12879138 is about 3588.7515935211. The cubic root of 12879138 is about 234.4025141743.

The spelling of 12879138 in words is "twelve million, eight hundred seventy-nine thousand, one hundred thirty-eight".