12945812 has 12 divisors (see below), whose sum is σ = 24714816. Its totient is φ = 5884440.

The previous prime is 12945811. The next prime is 12945841. The reversal of 12945812 is 21854921.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147068 + ... + 147155.

It is an arithmetic number, because the mean of its divisors is an integer number (2059568).

Almost surely, 2^12945812 is an apocalyptic number.

It is an amenable number.

12945812 is a deficient number, since it is larger than the sum of its proper divisors (11769004).

12945812 is a wasteful number, since it uses less digits than its factorization.

12945812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294238 (or 294236 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 12945812 is about 3598.0289048311. The cubic root of 12945812 is about 234.8063109030.

The spelling of 12945812 in words is "twelve million, nine hundred forty-five thousand, eight hundred twelve".