It is a happy number.
It is a Jordan-Polya number, since it can be written as 6! ⋅ (2!)4.
It is a nialpdrome in base 13.
It is a congruent number.
211520 is an apocalyptic number.
11520 is a gapful number since it is divisible by the number (10) 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 11520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19929).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11520 is an equidigital number, since it uses as much as digits as its factorization.
11520 is an evil number, because the sum of its binary digits is even.
The square root of 11520 is about 107.3312629200. The cubic root of 11520 is about 22.5848646931.
Subtracting from 11520 its reverse (2511), we obtain a palindrome (9009).
The spelling of 11520 in words is "eleven thousand, five hundred twenty".