328205638 has 16 divisors (see below), whose sum is σ = 522500544. Its totient is φ = 154084480.

The previous prime is 328205623. The next prime is 328205659. The reversal of 328205638 is 836502823.

It is a junction number, because it is equal to n+sod(n) for n = 328205597 and 328205606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3456 + ... + 25852.

It is an arithmetic number, because the mean of its divisors is an integer number (32656284).

Almost surely, 2^328205638 is an apocalyptic number.

328205638 is a deficient number, since it is larger than the sum of its proper divisors (194294906).

328205638 is a wasteful number, since it uses less digits than its factorization.

328205638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22847.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 328205638 is about 18116.4466162656. The cubic root of 328205638 is about 689.7875408332.

The spelling of 328205638 in words is "three hundred twenty-eight million, two hundred five thousand, six hundred thirty-eight".