2278206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a self number, because there is not a number n which added to its sum of digits gives 2278206.
It is a congruent number.
22278206 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2278206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3049200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2278206 is an equidigital number, since it uses as much as digits as its factorization.
2278206 is an odious number, because the sum of its binary digits is odd.
The square root of 2278206 is about 1509.3727173896. The cubic root of 2278206 is about 131.5823576772.
The spelling of 2278206 in words is "two million, two hundred seventy-eight thousand, two hundred six".