3220726 has 8 divisors (see below), whose sum is σ = 4874184. Its totient is φ = 1596000.

The previous prime is 3220703. The next prime is 3220727. The reversal of 3220726 is 6270223.

3220726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3220697 and 3220706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220727) 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 3 ways as a sum of consecutive naturals, for example, 6900 + ... + 7351.

It is an arithmetic number, because the mean of its divisors is an integer number (609273).

Almost surely, 2^3220726 is an apocalyptic number.

3220726 is a deficient number, since it is larger than the sum of its proper divisors (1653458).

3220726 is a wasteful number, since it uses less digits than its factorization.

3220726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14366.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 3220726 is about 1794.6381250826. The cubic root of 3220726 is about 147.6787223610.

Adding to 3220726 its reverse (6270223), we get a palindrome (9490949).

The spelling of 3220726 in words is "three million, two hundred twenty thousand, seven hundred twenty-six".