328335491 has 4 divisors (see below), whose sum is σ = 358184184. Its totient is φ = 298486800.

The previous prime is 328335481. The next prime is 328335493. The reversal of 328335491 is 194533823.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 328335491 - 2¹⁰ = 328334467 is a prime.

It is a super-2 number, since 2×328335491² = 215608389300422162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328335493) 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, 14924330 + ... + 14924351.

It is an arithmetic number, because the mean of its divisors is an integer number (89546046).

Almost surely, 2^328335491 is an apocalyptic number.

328335491 is a deficient number, since it is larger than the sum of its proper divisors (29848693).

328335491 is a wasteful number, since it uses less digits than its factorization.

328335491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29848692.

The product of its digits is 77760, while the sum is 38.

The square root of 328335491 is about 18120.0301048315. The cubic root of 328335491 is about 689.8784992253.

The spelling of 328335491 in words is "three hundred twenty-eight million, three hundred thirty-five thousand, four hundred ninety-one".