It is a self number, because there is not a number n which added to its sum of digits gives 9090240.
Almost surely, 29090240 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 9090240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15307056).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9090240 is a wasteful number, since it uses less digits than its factorization.
9090240 is an odious number, because the sum of its binary digits is odd.
The square root of 9090240 is about 3015.0024875612. The cubic root of 9090240 is about 208.7012818530.
The spelling of 9090240 in words is "nine million, ninety thousand, two hundred forty".