328644823 has 8 divisors (see below), whose sum is σ = 354286800. Its totient is φ = 303054528.

The previous prime is 328644817. The next prime is 328644847. The reversal of 328644823 is 328446823.

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

It is a cyclic number.

It is not a de Polignac number, because 328644823 - 2²¹ = 326547671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328644223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843 + ... + 25651.

It is an arithmetic number, because the mean of its divisors is an integer number (44285850).

Almost surely, 2^328644823 is an apocalyptic number.

328644823 is a deficient number, since it is larger than the sum of its proper divisors (25641977).

328644823 is a wasteful number, since it uses less digits than its factorization.

328644823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25841.

The product of its digits is 221184, while the sum is 40.

The square root of 328644823 is about 18128.5637324086. The cubic root of 328644823 is about 690.0950810652.

The spelling of 328644823 in words is "three hundred twenty-eight million, six hundred forty-four thousand, eight hundred twenty-three".