3204221440 has 80 divisors (see below), whose sum is σ = 8780188032. Its totient is φ = 1098584064.

The previous prime is 3204221431. The next prime is 3204221441. The reversal of 3204221440 is 441224023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-5 number, since 5×3204221440⁵ (a number of 49 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (3204221441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71484 + ... + 107323.

Almost surely, 2^3204221440 is an apocalyptic number.

It is an amenable number.

3204221440 is an abundant number, since it is smaller than the sum of its proper divisors (5575966592).

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

3204221440 is an equidigital number, since it uses as much as digits as its factorization.

3204221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178837 (or 178821 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 3204221440 is about 56605.8428079646. The cubic root of 3204221440 is about 1474.2603112995.

Adding to 3204221440 its reverse (441224023), we get a palindrome (3645445463).

The spelling of 3204221440 in words is "three billion, two hundred four million, two hundred twenty-one thousand, four hundred forty".