3220272 has 120 divisors (see below), whose sum is σ = 10445760. Its totient is φ = 915840.

The previous prime is 3220271. The next prime is 3220289. The reversal of 3220272 is 2720223.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3220271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30043 + ... + 30149.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

Almost surely, 2^3220272 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 3220272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5222880).

3220272 is an abundant number, since it is smaller than the sum of its proper divisors (7225488).

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

3220272 is a wasteful number, since it uses less digits than its factorization.

3220272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 3220272 is about 1794.5116327291. The cubic root of 3220272 is about 147.6717830052.

Adding to 3220272 its reverse (2720223), we get a palindrome (5940495).

The spelling of 3220272 in words is "three million, two hundred twenty thousand, two hundred seventy-two".