It is a tau number, because it is divible by the number of its divisors (168).
It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
816480 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2816480 is an apocalyptic number.
816480 is a gapful number since it is divisible by the number (80) 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 816480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652616).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
816480 is an equidigital number, since it uses as much as digits as its factorization.
816480 is an odious number, because the sum of its binary digits is odd.
The square root of 816480 is about 903.5928286568. The cubic root of 816480 is about 93.4648938333.
The spelling of 816480 in words is "eight hundred sixteen thousand, four hundred eighty".