11981184 has 64 divisors (see below), whose sum is σ = 32644080. Its totient is φ = 3891200.

The previous prime is 11981161. The next prime is 11981197. The reversal of 11981184 is 48118911.

11981184 = T₄₇ + T₄₈ + ... + T₄₁₅.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15364 + ... + 16124.

Almost surely, 2^11981184 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 11981184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16322040).

11981184 is an abundant number, since it is smaller than the sum of its proper divisors (20662896).

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

11981184 is an equidigital number, since it uses as much as digits as its factorization.

11981184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 807 counting only the distinct ones).

The product of its digits is 2304, while the sum is 33.

The square root of 11981184 is about 3461.3846940206. The cubic root of 11981184 is about 228.8231251179.

The spelling of 11981184 in words is "eleven million, nine hundred eighty-one thousand, one hundred eighty-four".