12782716 has 6 divisors (see below), whose sum is σ = 22369760. Its totient is φ = 6391356.

The previous prime is 12782713. The next prime is 12782717. The reversal of 12782716 is 61728721.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12782713) 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 as a sum of consecutive naturals, namely, 1597836 + ... + 1597843.

Almost surely, 2^12782716 is an apocalyptic number.

It is an amenable number.

12782716 is a deficient number, since it is larger than the sum of its proper divisors (9587044).

12782716 is a wasteful number, since it uses less digits than its factorization.

12782716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195683 (or 3195681 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 12782716 is about 3575.2924355918. The cubic root of 12782716 is about 233.8160826250.

The spelling of 12782716 in words is "twelve million, seven hundred eighty-two thousand, seven hundred sixteen".