3220916 has 12 divisors (see below), whose sum is σ = 5743332. Its totient is φ = 1579968.

The previous prime is 3220907. The next prime is 3220951. The reversal of 3220916 is 6190223.

It can be written as a sum of positive squares in 2 ways, for example, as 2856100 + 364816 = 1690^2 + 604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3220891 and 3220900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7385 + ... + 7808.

It is an arithmetic number, because the mean of its divisors is an integer number (478611).

Almost surely, 2^3220916 is an apocalyptic number.

It is an amenable number.

3220916 is a deficient number, since it is larger than the sum of its proper divisors (2522416).

3220916 is a wasteful number, since it uses less digits than its factorization.

3220916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15250 (or 15248 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3220916 is about 1794.6910597649. The cubic root of 3220916 is about 147.6816263031.

The spelling of 3220916 in words is "three million, two hundred twenty thousand, nine hundred sixteen".