328238191 has 8 divisors (see below), whose sum is σ = 332527104. Its totient is φ = 323957400.

The previous prime is 328238179. The next prime is 328238201. The reversal of 328238191 is 191832823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328238191 - 2¹¹ = 328236143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328238191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328238101) 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 7 ways as a sum of consecutive naturals, for example, 160920 + ... + 162946.

It is an arithmetic number, because the mean of its divisors is an integer number (41565888).

Almost surely, 2^328238191 is an apocalyptic number.

328238191 is a deficient number, since it is larger than the sum of its proper divisors (4288913).

328238191 is a wasteful number, since it uses less digits than its factorization.

328238191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061.

The product of its digits is 20736, while the sum is 37.

The square root of 328238191 is about 18117.3450317645. The cubic root of 328238191 is about 689.8103455516.

It can be divided in two parts, 32823 and 8191, that added together give a palindrome (41014).

The spelling of 328238191 in words is "three hundred twenty-eight million, two hundred thirty-eight thousand, one hundred ninety-one".