12731736 has 32 divisors (see below), whose sum is σ = 32509440. Its totient is φ = 4153248.

The previous prime is 12731723. The next prime is 12731743. The reversal of 12731736 is 63713721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4516 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (1015920).

Almost surely, 2^12731736 is an apocalyptic number.

It is an amenable number.

12731736 is an abundant number, since it is smaller than the sum of its proper divisors (19777704).

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

12731736 is a wasteful number, since it uses less digits than its factorization.

12731736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11343 (or 11339 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 12731736 is about 3568.1558261937. The cubic root of 12731736 is about 233.5048335535.

The spelling of 12731736 in words is "twelve million, seven hundred thirty-one thousand, seven hundred thirty-six".