11812866 has 32 divisors (see below), whose sum is σ = 25583040. Its totient is φ = 3614784.

The previous prime is 11812849. The next prime is 11812873. The reversal of 11812866 is 66821811.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20701 + ... + 21263.

It is an arithmetic number, because the mean of its divisors is an integer number (799470).

Almost surely, 2^11812866 is an apocalyptic number.

11812866 is an abundant number, since it is smaller than the sum of its proper divisors (13770174).

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

11812866 is a wasteful number, since it uses less digits than its factorization.

11812866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850.

The product of its digits is 4608, while the sum is 33.

The square root of 11812866 is about 3436.9850159697. The cubic root of 11812866 is about 227.7465250178.

The spelling of 11812866 in words is "eleven million, eight hundred twelve thousand, eight hundred sixty-six".