3220224 has 72 divisors (see below), whose sum is σ = 9811200. Its totient is φ = 918528.

The previous prime is 3220219. The next prime is 3220267. The reversal of 3220224 is 4220223.

It is a super-2 number, since 2×3220224² = 20739685220352, which contains 22 as substring.

It is a zygodrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5077 + ... + 5675.

Almost surely, 2^3220224 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 3220224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4905600).

3220224 is an abundant number, since it is smaller than the sum of its proper divisors (6590976).

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

3220224 is an equidigital number, since it uses as much as digits as its factorization.

3220224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 3220224 is about 1794.4982585670. The cubic root of 3220224 is about 147.6710492907.

Adding to 3220224 its reverse (4220223), we get a palindrome (7440447).

Subtracting 3220224 from its reverse (4220223), we obtain a palindrome (999999).

The spelling of 3220224 in words is "three million, two hundred twenty thousand, two hundred twenty-four".