11988886 has 32 divisors (see below), whose sum is σ = 23304960. Its totient is φ = 4491936.

The previous prime is 11988881. The next prime is 11988887. The reversal of 11988886 is 68888911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11988881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725 + ... + 5191.

It is an arithmetic number, because the mean of its divisors is an integer number (728280).

Almost surely, 2^11988886 is an apocalyptic number.

11988886 is a deficient number, since it is larger than the sum of its proper divisors (11316074).

11988886 is a wasteful number, since it uses less digits than its factorization.

11988886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508.

The product of its digits is 221184, while the sum is 49.

The square root of 11988886 is about 3462.4970758110. The cubic root of 11988886 is about 228.8721469341.

The spelling of 11988886 in words is "eleven million, nine hundred eighty-eight thousand, eight hundred eighty-six".