3216320 has 84 divisors (see below), whose sum is σ = 8427720. Its totient is φ = 1165824.

The previous prime is 3216289. The next prime is 3216331. The reversal of 3216320 is 236123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139829 + ... + 139851.

It is an arithmetic number, because the mean of its divisors is an integer number (100330).

Almost surely, 2^3216320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3216320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4213860).

3216320 is an abundant number, since it is smaller than the sum of its proper divisors (5211400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3216320 is a wasteful number, since it uses less digits than its factorization.

3216320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3216320 is about 1793.4101594448. The cubic root of 3216320 is about 147.6113494160.

The spelling of 3216320 in words is "three million, two hundred sixteen thousand, three hundred twenty".