328345538 has 4 divisors (see below), whose sum is σ = 492518310. Its totient is φ = 164172768.

The previous prime is 328345529. The next prime is 328345543. The reversal of 328345538 is 835543823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835543823 = 19477 ⋅42899.

It can be written as a sum of positive squares in only one way, i.e., 308248249 + 20097289 = 17557^2 + 4483^2 .

It is a junction number, because it is equal to n+sod(n) for n = 328345495 and 328345504.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 82086383 + ... + 82086386.

Almost surely, 2^328345538 is an apocalyptic number.

328345538 is a deficient number, since it is larger than the sum of its proper divisors (164172772).

328345538 is a wasteful number, since it uses less digits than its factorization.

328345538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164172771.

The product of its digits is 345600, while the sum is 41.

The square root of 328345538 is about 18120.3073373494. The cubic root of 328345538 is about 689.8855358680.

The spelling of 328345538 in words is "three hundred twenty-eight million, three hundred forty-five thousand, five hundred thirty-eight".