728030129 has 2 divisors, whose sum is σ = 728030130. Its totient is φ = 728030128.

The previous prime is 728030111. The next prime is 728030189. The reversal of 728030129 is 921030827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717007729 + 11022400 = 26777^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 728030129 - 2⁸ = 728029873 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 728030095 and 728030104.

It is not a weakly prime, because it can be changed into another prime (728030189) 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, 364015064 + 364015065.

It is an arithmetic number, because the mean of its divisors is an integer number (364015065).

Almost surely, 2^728030129 is an apocalyptic number.

It is an amenable number.

728030129 is a deficient number, since it is larger than the sum of its proper divisors (1).

728030129 is an equidigital number, since it uses as much as digits as its factorization.

728030129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 728030129 is about 26982.0334482040. The cubic root of 728030129 is about 899.6006990009.

The spelling of 728030129 in words is "seven hundred twenty-eight million, thirty thousand, one hundred twenty-nine".