2243406 has 32 divisors (see below), whose sum is σ = 5155200. Its totient is φ = 643680.

The previous prime is 2243399. The next prime is 2243419. The reversal of 2243406 is 6043422.

2243406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (161100).

2^2243406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2243406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577600).

2243406 is an abundant number, since it is smaller than the sum of its proper divisors (2911794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2243406 is a wasteful number, since it uses less digits than its factorization.

2243406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2243406 is about 1497.8003872346. The cubic root of 2243406 is about 130.9089357988.

Adding to 2243406 its reverse (6043422), we get a palindrome (8286828).

The spelling of 2243406 in words is "two million, two hundred forty-three thousand, four hundred six".