328802081 has 2 divisors, whose sum is σ = 328802082. Its totient is φ = 328802080.

The previous prime is 328802077. The next prime is 328802129. The reversal of 328802081 is 180208823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313467025 + 15335056 = 17705^2 + 3916^2 .

It is a cyclic number.

It is not a de Polignac number, because 328802081 - 2² = 328802077 is a prime.

It is a super-2 number, since 2×328802081² = 216221616939861122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (328802041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164401040 + 164401041.

It is an arithmetic number, because the mean of its divisors is an integer number (164401041).

Almost surely, 2^328802081 is an apocalyptic number.

It is an amenable number.

328802081 is a deficient number, since it is larger than the sum of its proper divisors (1).

328802081 is an equidigital number, since it uses as much as digits as its factorization.

328802081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 328802081 is about 18132.9005126042. The cubic root of 328802081 is about 690.2051346953.

The spelling of 328802081 in words is "three hundred twenty-eight million, eight hundred two thousand, eighty-one".