2259440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (40).
It is a congruent number.
22259440 is an apocalyptic number.
2259440 is a gapful number since it is divisible by the number (20) 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 2259440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2675424).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2259440 is a wasteful number, since it uses less digits than its factorization.
2259440 is an odious number, because the sum of its binary digits is odd.
The square root of 2259440 is about 1503.1433730686. The cubic root of 2259440 is about 131.2200717854.
The spelling of 2259440 in words is "two million, two hundred fifty-nine thousand, four hundred forty".