It is an Ulam number.
It is a congruent number.
211776 is an apocalyptic number.
11776 is a gapful number since it is divisible by the number (16) 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 11776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12276).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11776 is an frugal number, since it uses more digits than its factorization.
11776 is an evil number, because the sum of its binary digits is even.
The square root of 11776 is about 108.5172797300. The cubic root of 11776 is about 22.7509358388.
The spelling of 11776 in words is "eleven thousand, seven hundred seventy-six".