328001 has 4 divisors (see below), whose sum is σ = 329604. Its totient is φ = 326400.

The previous prime is 327983. The next prime is 328007. The reversal of 328001 is 100823.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 179776 = 385^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328001.

It is not an unprimeable number, because it can be changed into a prime (328007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (82401).

2³²⁸⁰⁰¹ is an apocalyptic number.

It is an amenable number.

328001 is a deficient number, since it is larger than the sum of its proper divisors (1603).

328001 is a wasteful number, since it uses less digits than its factorization.

328001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 328001 is about 572.7137155683. The cubic root of 328001 is about 68.9644148933.

Adding to 328001 its reverse (100823), we get a palindrome (428824).

The spelling of 328001 in words is "three hundred twenty-eight thousand, one".