12981336 has 32 divisors (see below), whose sum is σ = 34363440. Its totient is φ = 4072448.

The previous prime is 12981329. The next prime is 12981337. The reversal of 12981336 is 63318921.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12981297 and 12981306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12981337) 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, 15501 + ... + 16316.

Almost surely, 2^12981336 is an apocalyptic number.

It is an amenable number.

12981336 is an abundant number, since it is smaller than the sum of its proper divisors (21382104).

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

12981336 is a wasteful number, since it uses less digits than its factorization.

12981336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31843 (or 31839 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 12981336 is about 3602.9621147051. The cubic root of 12981336 is about 235.0208884405.

The spelling of 12981336 in words is "twelve million, nine hundred eighty-one thousand, three hundred thirty-six".