3220560 has 200 divisors, whose sum is σ = 12963456. Its totient is φ = 725760.

The previous prime is 3220549. The next prime is 3220561. The reversal of 3220560 is 650223.

3220560 = T₂₆₅ + T₂₆₆ + ... + T₃₃₅.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45325 + ... + 45395.

Almost surely, 2^3220560 is an apocalyptic number.

3220560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3220560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6481728).

3220560 is an abundant number, since it is smaller than the sum of its proper divisors (9742896).

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

3220560 is a wasteful number, since it uses less digits than its factorization.

3220560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3220560 is about 1794.5918756085. The cubic root of 3220560 is about 147.6761851391.

Adding to 3220560 its reverse (650223), we get a palindrome (3870783).

The spelling of 3220560 in words is "three million, two hundred twenty thousand, five hundred sixty".