328812965 has 16 divisors (see below), whose sum is σ = 425309808. Its totient is φ = 242597376.

The previous prime is 328812949. The next prime is 328812971. The reversal of 328812965 is 569218823.

It can be written as a sum of positive squares in 8 ways, for example, as 6466849 + 322346116 = 2543^2 + 17954^2 .

It is a cyclic number.

It is not a de Polignac number, because 328812965 - 2⁴ = 328812949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124337 + ... + 126953.

It is an arithmetic number, because the mean of its divisors is an integer number (26581863).

Almost surely, 2^328812965 is an apocalyptic number.

It is an amenable number.

328812965 is a deficient number, since it is larger than the sum of its proper divisors (96496843).

328812965 is a wasteful number, since it uses less digits than its factorization.

328812965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568.

The product of its digits is 207360, while the sum is 44.

The square root of 328812965 is about 18133.2006275781. The cubic root of 328812965 is about 690.2127503302.

The spelling of 328812965 in words is "three hundred twenty-eight million, eight hundred twelve thousand, nine hundred sixty-five".