328243442 has 18 divisors (see below), whose sum is σ = 515628813. Its totient is φ = 156704152.

The previous prime is 328243439. The next prime is 328243451. The reversal of 328243442 is 244342823.

It can be written as a sum of positive squares in 2 ways, for example, as 256992961 + 71250481 = 16031^2 + 8441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=12811.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328243399 and 328243408.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 589028 + ... + 589584.

Almost surely, 2^328243442 is an apocalyptic number.

328243442 is a deficient number, since it is larger than the sum of its proper divisors (187385371).

328243442 is an frugal number, since it uses more digits than its factorization.

328243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 582 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

The square root of 328243442 is about 18117.4899475617. The cubic root of 328243442 is about 689.8140239524.

Multiplying 328243442 by its sum of digits (32), we get a square (10503790144 = 102488²).

The spelling of 328243442 in words is "three hundred twenty-eight million, two hundred forty-three thousand, four hundred forty-two".