305328029 has 2 divisors, whose sum is σ = 305328030. Its totient is φ = 305328028.

The previous prime is 305328019. The next prime is 305328047. The reversal of 305328029 is 920823503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264712900 + 40615129 = 16270^2 + 6373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305328029 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 305327986 and 305328004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305328019) 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, 152664014 + 152664015.

It is an arithmetic number, because the mean of its divisors is an integer number (152664015).

Almost surely, 2^305328029 is an apocalyptic number.

It is an amenable number.

305328029 is a deficient number, since it is larger than the sum of its proper divisors (1).

305328029 is an equidigital number, since it uses as much as digits as its factorization.

305328029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 305328029 is about 17473.6381157445. The cubic root of 305328029 is about 673.3727820291.

The spelling of 305328029 in words is "three hundred five million, three hundred twenty-eight thousand, twenty-nine".