328440733 has 2 divisors, whose sum is σ = 328440734. Its totient is φ = 328440732.

The previous prime is 328440727. The next prime is 328440757. The reversal of 328440733 is 337044823.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296597284 + 31843449 = 17222^2 + 5643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328440733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328440793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164220366 + 164220367.

It is an arithmetic number, because the mean of its divisors is an integer number (164220367).

Almost surely, 2^328440733 is an apocalyptic number.

It is an amenable number.

328440733 is a deficient number, since it is larger than the sum of its proper divisors (1).

328440733 is an equidigital number, since it uses as much as digits as its factorization.

328440733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 328440733 is about 18122.9338960335. The cubic root of 328440733 is about 689.9522007076.

The spelling of 328440733 in words is "three hundred twenty-eight million, four hundred forty thousand, seven hundred thirty-three".