12815316 has 36 divisors (see below), whose sum is σ = 32660992. Its totient is φ = 4236624.

The previous prime is 12815293. The next prime is 12815317. The reversal of 12815316 is 61351821.

12815316 is a `hidden beast` number, since 128 + 1 + 531 + 6 = 666.

12815316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12815316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12815317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3171 + ... + 5973.

Almost surely, 2^12815316 is an apocalyptic number.

It is an amenable number.

12815316 is an abundant number, since it is smaller than the sum of its proper divisors (19845676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12815316 is a wasteful number, since it uses less digits than its factorization.

12815316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2935 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12815316 is about 3579.8486001506. The cubic root of 12815316 is about 234.0146824011.

It can be divided in two parts, 12815 and 316, that added together give a palindrome (13131).

The spelling of 12815316 in words is "twelve million, eight hundred fifteen thousand, three hundred sixteen".