328421517 has 16 divisors (see below), whose sum is σ = 461760000. Its totient is φ = 207056304.

The previous prime is 328421473. The next prime is 328421519. The reversal of 328421517 is 715124823.

It is a de Polignac number, because none of the positive numbers 2^k-328421517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328421519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29334 + ... + 38952.

It is an arithmetic number, because the mean of its divisors is an integer number (28860000).

Almost surely, 2^328421517 is an apocalyptic number.

It is an amenable number.

328421517 is a deficient number, since it is larger than the sum of its proper divisors (133338483).

328421517 is a wasteful number, since it uses less digits than its factorization.

328421517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240.

The product of its digits is 13440, while the sum is 33.

The square root of 328421517 is about 18122.4037312935. The cubic root of 328421517 is about 689.9387448247.

The spelling of 328421517 in words is "three hundred twenty-eight million, four hundred twenty-one thousand, five hundred seventeen".