328528647 has 6 divisors (see below), whose sum is σ = 474541392. Its totient is φ = 219019092.

The previous prime is 328528631. The next prime is 328528649. The reversal of 328528647 is 746825823.

328528647 is a `hidden beast` number, since 328 + 5 + 286 + 47 = 666.

It is not a de Polignac number, because 328528647 - 2⁴ = 328528631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328528649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18251583 + ... + 18251600.

It is an arithmetic number, because the mean of its divisors is an integer number (79090232).

Almost surely, 2^328528647 is an apocalyptic number.

328528647 is a deficient number, since it is larger than the sum of its proper divisors (146012745).

328528647 is a wasteful number, since it uses less digits than its factorization.

328528647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36503189 (or 36503186 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 328528647 is about 18125.3592240264. The cubic root of 328528647 is about 690.0137552393.

The spelling of 328528647 in words is "three hundred twenty-eight million, five hundred twenty-eight thousand, six hundred forty-seven".