3228205 has 4 divisors (see below), whose sum is σ = 3873852. Its totient is φ = 2582560.

The previous prime is 3228191. The next prime is 3228209. The reversal of 3228205 is 5028223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574564 + 2653641 = 758^2 + 1629^2 .

It is not a de Polignac number, because 3228205 - 2¹⁹ = 2703917 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3228209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322816 + ... + 322825.

It is an arithmetic number, because the mean of its divisors is an integer number (968463).

Almost surely, 2^3228205 is an apocalyptic number.

It is an amenable number.

3228205 is a deficient number, since it is larger than the sum of its proper divisors (645647).

3228205 is an equidigital number, since it uses as much as digits as its factorization.

3228205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645646.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 3228205 is about 1796.7206238033. The cubic root of 3228205 is about 147.7929445722.

The spelling of 3228205 in words is "three million, two hundred twenty-eight thousand, two hundred five".