328308643 has 8 divisors (see below), whose sum is σ = 358841168. Its totient is φ = 298530144.

The previous prime is 328308599. The next prime is 328308653. The reversal of 328308643 is 346803823.

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

It is a cyclic number.

It is not a de Polignac number, because 328308643 - 2¹³ = 328300451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328308653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187596 + ... + 189337.

It is an arithmetic number, because the mean of its divisors is an integer number (44855146).

Almost surely, 2^328308643 is an apocalyptic number.

328308643 is a deficient number, since it is larger than the sum of its proper divisors (30532525).

328308643 is a wasteful number, since it uses less digits than its factorization.

328308643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377013.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 328308643 is about 18119.2892520650. The cubic root of 328308643 is about 689.8596949197.

The spelling of 328308643 in words is "three hundred twenty-eight million, three hundred eight thousand, six hundred forty-three".