It is a nialpdrome in base 3.
It is a zygodrome in base 3.
It is a congruent number.
It is an unprimeable number.
2787320 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 787320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
787320 is an frugal number, since it uses more digits than its factorization.
787320 is an evil number, because the sum of its binary digits is even.
The square root of 787320 is about 887.3105431584. The cubic root of 787320 is about 92.3387011205.
The spelling of 787320 in words is "seven hundred eighty-seven thousand, three hundred twenty".