3220005440 has 56 divisors (see below), whose sum is σ = 7672532280. Its totient is φ = 1287180288.

The previous prime is 3220005337. The next prime is 3220005511. The reversal of 3220005440 is 445000223.

It can be written as a sum of positive squares in 4 ways, for example, as 835441216 + 2384564224 = 28904^2 + 48832^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866306 + ... + 870014.

It is an arithmetic number, because the mean of its divisors is an integer number (137009505).

Almost surely, 2^3220005440 is an apocalyptic number.

It is an amenable number.

3220005440 is an abundant number, since it is smaller than the sum of its proper divisors (4452526840).

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

3220005440 is a wasteful number, since it uses less digits than its factorization.

3220005440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6429 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3220005440 is about 56745.0917701258. The cubic root of 3220005440 is about 1476.6770835182.

Adding to 3220005440 its reverse (445000223), we get a palindrome (3665005663).

The spelling of 3220005440 in words is "three billion, two hundred twenty million, five thousand, four hundred forty".