It is a tau number, because it is divible by the number of its divisors (64).
It is a congruent number.
Almost surely, 28121984 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 8121984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11623920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8121984 is a wasteful number, since it uses less digits than its factorization.
8121984 is an odious number, because the sum of its binary digits is odd.
The square root of 8121984 is about 2849.9094722464. The cubic root of 8121984 is about 201.0114099609.
The spelling of 8121984 in words is "eight million, one hundred twenty-one thousand, nine hundred eighty-four".