328745138 has 8 divisors (see below), whose sum is σ = 493231788. Its totient is φ = 164334544.

The previous prime is 328745113. The next prime is 328745143. The reversal of 328745138 is 831547823.

It can be written as a sum of positive squares in 2 ways, for example, as 306495049 + 22250089 = 17507^2 + 4717^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 328745095 and 328745104.

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 3 ways as a sum of consecutive naturals, for example, 6581 + ... + 26472.

Almost surely, 2^328745138 is an apocalyptic number.

328745138 is a deficient number, since it is larger than the sum of its proper divisors (164486650).

328745138 is a wasteful number, since it uses less digits than its factorization.

328745138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38028.

The product of its digits is 161280, while the sum is 41.

The square root of 328745138 is about 18131.3302876540. The cubic root of 328745138 is about 690.1652884146.

The spelling of 328745138 in words is "three hundred twenty-eight million, seven hundred forty-five thousand, one hundred thirty-eight".