12815788 has 12 divisors (see below), whose sum is σ = 22579200. Its totient is φ = 6364592.

The previous prime is 12815783. The next prime is 12815797. The reversal of 12815788 is 88751821.

12815788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12815788.

It is not an unprimeable number, because it can be changed into a prime (12815783) 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, 10156 + ... + 11347.

It is an arithmetic number, because the mean of its divisors is an integer number (1881600).

Almost surely, 2^12815788 is an apocalyptic number.

It is an amenable number.

12815788 is a deficient number, since it is larger than the sum of its proper divisors (9763412).

12815788 is a wasteful number, since it uses less digits than its factorization.

12815788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21656 (or 21654 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The square root of 12815788 is about 3579.9145241193. The cubic root of 12815788 is about 234.0175553586.

The spelling of 12815788 in words is "twelve million, eight hundred fifteen thousand, seven hundred eighty-eight".