328812945 has 16 divisors (see below), whose sum is σ = 548975232. Its totient is φ = 167742080.

The previous prime is 328812943. The next prime is 328812949. The reversal of 328812945 is 549218823.

It is not a de Polignac number, because 328812945 - 2¹ = 328812943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328812897 and 328812906.

It is not an unprimeable number, because it can be changed into a prime (328812941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476196 + ... + 476885.

It is an arithmetic number, because the mean of its divisors is an integer number (34310952).

Almost surely, 2^328812945 is an apocalyptic number.

It is an amenable number.

328812945 is a deficient number, since it is larger than the sum of its proper divisors (220162287).

328812945 is a wasteful number, since it uses less digits than its factorization.

328812945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953112.

The product of its digits is 138240, while the sum is 42.

The square root of 328812945 is about 18133.2000761035. The cubic root of 328812945 is about 690.2127363361.

The spelling of 328812945 in words is "three hundred twenty-eight million, eight hundred twelve thousand, nine hundred forty-five".