3220406 has 16 divisors (see below), whose sum is σ = 5670816. Its totient is φ = 1342656.

The previous prime is 3220381. The next prime is 3220409. The reversal of 3220406 is 6040223.

3220406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220409) 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, 2591 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (354426).

Almost surely, 2^3220406 is an apocalyptic number.

3220406 is a deficient number, since it is larger than the sum of its proper divisors (2450410).

3220406 is a wasteful number, since it uses less digits than its factorization.

3220406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3220406 is about 1794.5489684040. The cubic root of 3220406 is about 147.6738312529.

Adding to 3220406 its reverse (6040223), we get a palindrome (9260629).

The spelling of 3220406 in words is "three million, two hundred twenty thousand, four hundred six".