328998 has 8 divisors (see below), whose sum is σ = 658008. Its totient is φ = 109664.

The previous prime is 328981. The next prime is 329009. The reversal of 328998 is 899823.

328998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

328998 is an admirable number.

It is a congruent number.

It is an unprimeable number.

328998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 27411 + ... + 27422.

It is an arithmetic number, because the mean of its divisors is an integer number (82251).

2³²⁸⁹⁹⁸ is an apocalyptic number.

328998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328998 is a wasteful number, since it uses less digits than its factorization.

328998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54838.

The product of its digits is 31104, while the sum is 39.

The square root of 328998 is about 573.5834725652. The cubic root of 328998 is about 69.0342195315.

It can be divided in two parts, 328 and 998, that added together give a triangular number (1326 = T₅₁).

The spelling of 328998 in words is "three hundred twenty-eight thousand, nine hundred ninety-eight".