328243572 has 18 divisors (see below), whose sum is σ = 829726898. Its totient is φ = 109414512.

The previous prime is 328243571. The next prime is 328243583. The reversal of 328243572 is 275342823.

328243572 is a `hidden beast` number, since 3 + 2 + 82 + 4 + 3 + 572 = 666.

It can be written as a sum of positive squares in only one way, i.e., 240746256 + 87497316 = 15516^2 + 9354^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 9117877 = 328243572 / (3 + 2 + 8 + 2 + 4 + 3 + 5 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328243571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4558903 + ... + 4558974.

Almost surely, 2^328243572 is an apocalyptic number.

It is an amenable number.

328243572 is an abundant number, since it is smaller than the sum of its proper divisors (501483326).

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

328243572 is a wasteful number, since it uses less digits than its factorization.

328243572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117887 (or 9117882 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 328243572 is about 18117.4935352548. The cubic root of 328243572 is about 689.8141150187.

The spelling of 328243572 in words is "three hundred twenty-eight million, two hundred forty-three thousand, five hundred seventy-two".