12786746 has 12 divisors (see below), whose sum is σ = 22311738. Its totient is φ = 5479992.

The previous prime is 12786743. The next prime is 12786751. The reversal of 12786746 is 64768721.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 290521 = 3535^2 + 539^2 .

It is not an unprimeable number, because it can be changed into a prime (12786743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65141 + ... + 65336.

Almost surely, 2^12786746 is an apocalyptic number.

12786746 is a deficient number, since it is larger than the sum of its proper divisors (9524992).

12786746 is a wasteful number, since it uses less digits than its factorization.

12786746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130493 (or 130486 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 12786746 is about 3575.8559814400. The cubic root of 12786746 is about 233.8406517335.

The spelling of 12786746 in words is "twelve million, seven hundred eighty-six thousand, seven hundred forty-six".