328768903 has 4 divisors (see below), whose sum is σ = 328807368. Its totient is φ = 328730440.

The previous prime is 328768889. The next prime is 328768907. The reversal of 328768903 is 309867823.

328768903 is a nontrivial binomial coefficient, being equal to C(25643, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 328768903 - 2⁵ = 328768871 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 (328768907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 25642.

It is an arithmetic number, because the mean of its divisors is an integer number (82201842).

Almost surely, 2^328768903 is an apocalyptic number.

328768903 is the 25642-nd triangular number.

328768903 is the 8548-th centered nonagonal number.

328768903 is a deficient number, since it is larger than the sum of its proper divisors (38465).

328768903 is a wasteful number, since it uses less digits than its factorization.

328768903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38464.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 328768903 is about 18131.9856331291. The cubic root of 328768903 is about 690.1819187065.

The spelling of 328768903 in words is "three hundred twenty-eight million, seven hundred sixty-eight thousand, nine hundred three".