328028307508 has 18 divisors (see below), whose sum is σ = 630980071778. Its totient is φ = 149103775920.

The previous prime is 328028307499. The next prime is 328028307533. The reversal of 328028307508 is 805703820823.

It can be written as a sum of positive squares in only one way, i.e., 318831881104 + 9196426404 = 564652^2 + 95898^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 338871735 + ... + 338872702.

Almost surely, 2^328028307508 is an apocalyptic number.

It is an amenable number.

328028307508 is a deficient number, since it is larger than the sum of its proper divisors (302951764270).

328028307508 is a wasteful number, since it uses less digits than its factorization.

328028307508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677744463 (or 677744450 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

It can be divided in two parts, 328028 and 307508, that added together give a palindrome (635536).

The spelling of 328028307508 in words is "three hundred twenty-eight billion, twenty-eight million, three hundred seven thousand, five hundred eight".