11911984 has 20 divisors (see below), whose sum is σ = 26376784. Its totient is φ = 5105088.

The previous prime is 11911981. The next prime is 11911987. The reversal of 11911984 is 48911911.

It is an interprime number because it is at equal distance from previous prime (11911981) and next prime (11911987).

It is not an unprimeable number, because it can be changed into a prime (11911981) 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 3 ways as a sum of consecutive naturals, for example, 53067 + ... + 53290.

Almost surely, 2^11911984 is an apocalyptic number.

11911984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11911984 is an abundant number, since it is smaller than the sum of its proper divisors (14464800).

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

11911984 is a wasteful number, since it uses less digits than its factorization.

11911984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106372 (or 106366 counting only the distinct ones).

The product of its digits is 2592, while the sum is 34.

The square root of 11911984 is about 3451.3742190612. The cubic root of 11911984 is about 228.3817345787.

The spelling of 11911984 in words is "eleven million, nine hundred eleven thousand, nine hundred eighty-four".