12945916 has 12 divisors (see below), whose sum is σ = 23847880. Its totient is φ = 6132240.

The previous prime is 12945871. The next prime is 12945917. The reversal of 12945916 is 61954921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945917) 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 3 ways as a sum of consecutive naturals, for example, 85095 + ... + 85246.

Almost surely, 2^12945916 is an apocalyptic number.

It is an amenable number.

12945916 is a deficient number, since it is larger than the sum of its proper divisors (10901964).

12945916 is a wasteful number, since it uses less digits than its factorization.

12945916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170364 (or 170362 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 12945916 is about 3598.0433571596. The cubic root of 12945916 is about 234.8069396724.

It can be divided in two parts, 12945 and 916, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 12945916 in words is "twelve million, nine hundred forty-five thousand, nine hundred sixteen".