328894891 has 4 divisors (see below), whose sum is σ = 354194512. Its totient is φ = 303595272.

The previous prime is 328894889. The next prime is 328894897. The reversal of 328894891 is 198498823.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 328894891 - 2¹ = 328894889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328894897) 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, 12649791 + ... + 12649816.

It is an arithmetic number, because the mean of its divisors is an integer number (88548628).

Almost surely, 2^328894891 is an apocalyptic number.

328894891 is a deficient number, since it is larger than the sum of its proper divisors (25299621).

328894891 is a wasteful number, since it uses less digits than its factorization.

328894891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25299620.

The product of its digits is 995328, while the sum is 52.

The square root of 328894891 is about 18135.4594923867. The cubic root of 328894891 is about 690.2700693130.

The spelling of 328894891 in words is "three hundred twenty-eight million, eight hundred ninety-four thousand, eight hundred ninety-one".