11916684 has 36 divisors (see below), whose sum is σ = 32441136. Its totient is φ = 3666528.

The previous prime is 11916661. The next prime is 11916689. The reversal of 11916684 is 48661911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11916689) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12264 + ... + 13199.

Almost surely, 2^11916684 is an apocalyptic number.

It is an amenable number.

11916684 is an abundant number, since it is smaller than the sum of its proper divisors (20524452).

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

11916684 is a wasteful number, since it uses less digits than its factorization.

11916684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25486 (or 25481 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 11916684 is about 3452.0550401174. The cubic root of 11916684 is about 228.4117674433.

It can be divided in two parts, 1191 and 6684, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 11916684 in words is "eleven million, nine hundred sixteen thousand, six hundred eighty-four".