12818516 has 12 divisors (see below), whose sum is σ = 22655220. Its totient is φ = 6345600.

The previous prime is 12818513. The next prime is 12818543. The reversal of 12818516 is 61581821.

It can be written as a sum of positive squares in 2 ways, for example, as 12250000 + 568516 = 3500^2 + 754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818513) 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, 15461 + ... + 16268.

It is an arithmetic number, because the mean of its divisors is an integer number (1887935).

Almost surely, 2^12818516 is an apocalyptic number.

It is an amenable number.

12818516 is a deficient number, since it is larger than the sum of its proper divisors (9836704).

12818516 is a wasteful number, since it uses less digits than its factorization.

12818516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31834 (or 31832 counting only the distinct ones).

The product of its digits is 3840, while the sum is 32.

The square root of 12818516 is about 3580.2955185292. The cubic root of 12818516 is about 234.0341586971.

The spelling of 12818516 in words is "twelve million, eight hundred eighteen thousand, five hundred sixteen".