12879878 has 16 divisors (see below), whose sum is σ = 21155904. Its totient is φ = 5832360.

The previous prime is 12879859. The next prime is 12879883. The reversal of 12879878 is 87897821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801 + ... + 7707.

It is an arithmetic number, because the mean of its divisors is an integer number (1322244).

Almost surely, 2^12879878 is an apocalyptic number.

12879878 is a deficient number, since it is larger than the sum of its proper divisors (8276026).

12879878 is a wasteful number, since it uses less digits than its factorization.

12879878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227.

The product of its digits is 451584, while the sum is 50.

The square root of 12879878 is about 3588.8546919595. The cubic root of 12879878 is about 234.4070034639.

The spelling of 12879878 in words is "twelve million, eight hundred seventy-nine thousand, eight hundred seventy-eight".