3281216 has 28 divisors (see below), whose sum is σ = 6571488. Its totient is φ = 1625472.

The previous prime is 3281209. The next prime is 3281233. The reversal of 3281216 is 6121823.

It is a junction number, because it is equal to n+sod(n) for n = 3281191 and 3281200.

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, 10535 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (234696).

Almost surely, 2^3281216 is an apocalyptic number.

It is an amenable number.

3281216 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

3281216 is a wasteful number, since it uses less digits than its factorization.

3281216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 476 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 3281216 is about 1811.4127083578. The cubic root of 3281216 is about 148.5975355644.

The spelling of 3281216 in words is "three million, two hundred eighty-one thousand, two hundred sixteen".