11866120 has 32 divisors (see below), whose sum is σ = 30513600. Its totient is φ = 4068288.

The previous prime is 11866109. The next prime is 11866157. The reversal of 11866120 is 2166811.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20910 + ... + 21469.

It is an arithmetic number, because the mean of its divisors is an integer number (953550).

Almost surely, 2^11866120 is an apocalyptic number.

11866120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11866120 is an abundant number, since it is smaller than the sum of its proper divisors (18647480).

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

11866120 is a wasteful number, since it uses less digits than its factorization.

11866120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42397 (or 42393 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 11866120 is about 3444.7235012407. The cubic root of 11866120 is about 228.0882494123.

The spelling of 11866120 in words is "eleven million, eight hundred sixty-six thousand, one hundred twenty".