328712889 has 16 divisors (see below), whose sum is σ = 446186880. Its totient is φ = 215214720.

The previous prime is 328712887. The next prime is 328712893. The reversal of 328712889 is 988217823.

It is not a de Polignac number, because 328712889 - 2¹ = 328712887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328712887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54429 + ... + 60165.

It is an arithmetic number, because the mean of its divisors is an integer number (27886680).

Almost surely, 2^328712889 is an apocalyptic number.

It is an amenable number.

328712889 is a deficient number, since it is larger than the sum of its proper divisors (117473991).

328712889 is a wasteful number, since it uses less digits than its factorization.

328712889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080.

The product of its digits is 387072, while the sum is 48.

The square root of 328712889 is about 18130.4409488573. The cubic root of 328712889 is about 690.1427199001.

The spelling of 328712889 in words is "three hundred twenty-eight million, seven hundred twelve thousand, eight hundred eighty-nine".