2221746 has 16 divisors (see below), whose sum is σ = 4677600. Its totient is φ = 701568.

The previous prime is 2221741. The next prime is 2221753. The reversal of 2221746 is 6471222.

2221746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2 + 2³ + 2¹⁹ + 1 + 7⁵ + 4⁵ + 6⁸ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221741) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9631 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (292350).

2^2221746 is an apocalyptic number.

2221746 is an abundant number, since it is smaller than the sum of its proper divisors (2455854).

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

2221746 is a wasteful number, since it uses less digits than its factorization.

2221746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19513.

The product of its digits is 1344, while the sum is 24.

The square root of 2221746 is about 1490.5522466522. The cubic root of 2221746 is about 130.4862656382.

Adding to 2221746 its reverse (6471222), we get a palindrome (8692968).

The spelling of 2221746 in words is "two million, two hundred twenty-one thousand, seven hundred forty-six".