328295891 has 16 divisors (see below), whose sum is σ = 433382400. Its totient is φ = 240766080.

The previous prime is 328295887. The next prime is 328295909. The reversal of 328295891 is 198592823.

It is a cyclic number.

It is not a de Polignac number, because 328295891 - 2² = 328295887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328295801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124091 + ... + 126708.

It is an arithmetic number, because the mean of its divisors is an integer number (27086400).

Almost surely, 2^328295891 is an apocalyptic number.

328295891 is a deficient number, since it is larger than the sum of its proper divisors (105086509).

328295891 is a wasteful number, since it uses less digits than its factorization.

328295891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250834.

The product of its digits is 311040, while the sum is 47.

The square root of 328295891 is about 18118.9373584656. The cubic root of 328295891 is about 689.8507630757.

The spelling of 328295891 in words is "three hundred twenty-eight million, two hundred ninety-five thousand, eight hundred ninety-one".