11686890 has 16 divisors (see below), whose sum is σ = 28048608. Its totient is φ = 3116496.

The previous prime is 11686867. The next prime is 11686901. The reversal of 11686890 is 9868611.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194752 + ... + 194811.

It is an arithmetic number, because the mean of its divisors is an integer number (1753038).

Almost surely, 2^11686890 is an apocalyptic number.

11686890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11686890 is an abundant number, since it is smaller than the sum of its proper divisors (16361718).

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

11686890 is a wasteful number, since it uses less digits than its factorization.

11686890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389573.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 11686890 is about 3418.6093663945. The cubic root of 11686890 is about 226.9340438575.

The spelling of 11686890 in words is "eleven million, six hundred eighty-six thousand, eight hundred ninety".