3220216 has 8 divisors (see below), whose sum is σ = 6037920. Its totient is φ = 1610104.

The previous prime is 3220211. The next prime is 3220219. The reversal of 3220216 is 6120223.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3220216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201256 + ... + 201271.

It is an arithmetic number, because the mean of its divisors is an integer number (754740).

Almost surely, 2^3220216 is an apocalyptic number.

It is an amenable number.

3220216 is a deficient number, since it is larger than the sum of its proper divisors (2817704).

3220216 is a wasteful number, since it uses less digits than its factorization.

3220216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402533 (or 402529 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3220216 is about 1794.4960295303. The cubic root of 3220216 is about 147.6709270042.

Adding to 3220216 its reverse (6120223), we get a palindrome (9340439).

The spelling of 3220216 in words is "three million, two hundred twenty thousand, two hundred sixteen".