11871684 has 60 divisors (see below), whose sum is σ = 33866448. Its totient is φ = 3596400.

The previous prime is 11871659. The next prime is 11871689. The reversal of 11871684 is 48617811.

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 (11871689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1899 + ... + 5229.

Almost surely, 2^11871684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11871684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16933224).

11871684 is an abundant number, since it is smaller than the sum of its proper divisors (21994764).

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

11871684 is a wasteful number, since it uses less digits than its factorization.

11871684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358 (or 3347 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 11871684 is about 3445.5310185804. The cubic root of 11871684 is about 228.1238938834.

The spelling of 11871684 in words is "eleven million, eight hundred seventy-one thousand, six hundred eighty-four".