3220816 has 20 divisors (see below), whose sum is σ = 6374592. Its totient is φ = 1575776.

The previous prime is 3220801. The next prime is 3220817. The reversal of 3220816 is 6180223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220817) 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, 1390 + ... + 2893.

Almost surely, 2^3220816 is an apocalyptic number.

It is an amenable number.

3220816 is a deficient number, since it is larger than the sum of its proper divisors (3153776).

3220816 is a wasteful number, since it uses less digits than its factorization.

3220816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338 (or 4332 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 3220816 is about 1794.6631996004. The cubic root of 3220816 is about 147.6800979267.

The spelling of 3220816 in words is "three million, two hundred twenty thousand, eight hundred sixteen".