11866938 has 8 divisors (see below), whose sum is σ = 23733888. Its totient is φ = 3955644.

The previous prime is 11866913. The next prime is 11866949. The reversal of 11866938 is 83966811.

11866938 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

11866938 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11866938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988906 + ... + 988917.

It is an arithmetic number, because the mean of its divisors is an integer number (2966736).

Almost surely, 2^11866938 is an apocalyptic number.

11866938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11866938 is a wasteful number, since it uses less digits than its factorization.

11866938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977828.

The product of its digits is 62208, while the sum is 42.

The square root of 11866938 is about 3444.8422315108. The cubic root of 11866938 is about 228.0934904375.

The spelling of 11866938 in words is "eleven million, eight hundred sixty-six thousand, nine hundred thirty-eight".