12861338 has 16 divisors (see below), whose sum is σ = 22184064. Its totient is φ = 5478000.

The previous prime is 12861337. The next prime is 12861341. The reversal of 12861338 is 83316821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12861337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (1386504).

Almost surely, 2^12861338 is an apocalyptic number.

12861338 is a deficient number, since it is larger than the sum of its proper divisors (9322726).

12861338 is a wasteful number, since it uses less digits than its factorization.

12861338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677.

The product of its digits is 6912, while the sum is 32.

The square root of 12861338 is about 3586.2707650148. The cubic root of 12861338 is about 234.2944767055.

The spelling of 12861338 in words is "twelve million, eight hundred sixty-one thousand, three hundred thirty-eight".