324441728 has 32 divisors (see below), whose sum is σ = 696071460. Its totient is φ = 149741568.

The previous prime is 324441721. The next prime is 324441773. The reversal of 324441728 is 827144423.

It can be written as a sum of positive squares in 2 ways, for example, as 324288064 + 153664 = 18008^2 + 392^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (324441721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95825 + ... + 99152.

Almost surely, 2^324441728 is an apocalyptic number.

It is an amenable number.

324441728 is an abundant number, since it is smaller than the sum of its proper divisors (371629732).

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

324441728 is a wasteful number, since it uses less digits than its factorization.

324441728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195004 (or 194992 counting only the distinct ones).

The product of its digits is 43008, while the sum is 35.

The square root of 324441728 is about 18012.2660428942. The cubic root of 324441728 is about 687.1405348603.

The spelling of 324441728 in words is "three hundred twenty-four million, four hundred forty-one thousand, seven hundred twenty-eight".