11871912 has 48 divisors (see below), whose sum is σ = 32149440. Its totient is φ = 3651648.

The previous prime is 11871907. The next prime is 11871929. The reversal of 11871912 is 21917811.

It is a self number, because there is not a number n which added to its sum of digits gives 11871912.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2593 + ... + 5519.

It is an arithmetic number, because the mean of its divisors is an integer number (669780).

Almost surely, 2^11871912 is an apocalyptic number.

11871912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11871912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16074720).

11871912 is an abundant number, since it is smaller than the sum of its proper divisors (20277528).

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

11871912 is a wasteful number, since it uses less digits than its factorization.

11871912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962 (or 2945 counting only the distinct ones).

The product of its digits is 1008, while the sum is 30.

The square root of 11871912 is about 3445.5641047585. The cubic root of 11871912 is about 228.1253542748.

The spelling of 11871912 in words is "eleven million, eight hundred seventy-one thousand, nine hundred twelve".