328881 has 8 divisors (see below), whose sum is σ = 501184. Its totient is φ = 187920.

The previous prime is 328849. The next prime is 328883. The reversal of 328881 is 188823.

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

It is not a de Polignac number, because 328881 - 2⁵ = 328849 is a prime.

It is a super-2 number, since 2×328881² = 216325424322, which contains 22 as substring.

It is a Duffinian number.

328881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (328883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7810 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (62648).

2³²⁸⁸⁸¹ is an apocalyptic number.

It is an amenable number.

328881 is a deficient number, since it is larger than the sum of its proper divisors (172303).

328881 is a wasteful number, since it uses less digits than its factorization.

328881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15671.

The product of its digits is 3072, while the sum is 30.

The square root of 328881 is about 573.4814731096. The cubic root of 328881 is about 69.0260351237.

The spelling of 328881 in words is "three hundred twenty-eight thousand, eight hundred eighty-one".