328407 has 4 divisors (see below), whose sum is σ = 437880. Its totient is φ = 218936.

The previous prime is 328397. The next prime is 328411. The reversal of 328407 is 704823.

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 328407 - 2⁶ = 328343 is a prime.

It is an Ulam number.

It is a D-number.

328407 is a lucky number.

It is a nialpdrome in base 13.

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 328407.

It is not an unprimeable number, because it can be changed into a prime (328007) 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, 54732 + ... + 54737.

It is an arithmetic number, because the mean of its divisors is an integer number (109470).

2³²⁸⁴⁰⁷ is an apocalyptic number.

328407 is a deficient number, since it is larger than the sum of its proper divisors (109473).

328407 is a wasteful number, since it uses less digits than its factorization.

328407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109472.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 328407 is about 573.0680587853. The cubic root of 328407 is about 68.9928579039.

The spelling of 328407 in words is "three hundred twenty-eight thousand, four hundred seven".