11816986 has 32 divisors (see below), whose sum is σ = 19502208. Its totient is φ = 5353920.

The previous prime is 11816977. The next prime is 11816999. The reversal of 11816986 is 68961811.

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, 90141 + ... + 90271.

It is an arithmetic number, because the mean of its divisors is an integer number (609444).

Almost surely, 2^11816986 is an apocalyptic number.

11816986 is a deficient number, since it is larger than the sum of its proper divisors (7685222).

11816986 is a wasteful number, since it uses less digits than its factorization.

11816986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its digits is 20736, while the sum is 40.

The square root of 11816986 is about 3437.5843262384. The cubic root of 11816986 is about 227.7729991639.

The spelling of 11816986 in words is "eleven million, eight hundred sixteen thousand, nine hundred eighty-six".