12812886 has 24 divisors (see below), whose sum is σ = 28969200. Its totient is φ = 4085136.

The previous prime is 12812861. The next prime is 12812893. The reversal of 12812886 is 68821821.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12812886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15061 + ... + 15888.

It is an arithmetic number, because the mean of its divisors is an integer number (1207050).

Almost surely, 2^12812886 is an apocalyptic number.

12812886 is an abundant number, since it is smaller than the sum of its proper divisors (16156314).

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

12812886 is a wasteful number, since it uses less digits than its factorization.

12812886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30980 (or 30977 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 12812886 is about 3579.5091842318. The cubic root of 12812886 is about 233.9998904229. Note that the first 3 decimals are identical.

The spelling of 12812886 in words is "twelve million, eight hundred twelve thousand, eight hundred eighty-six".