728436629 has 2 divisors, whose sum is σ = 728436630. Its totient is φ = 728436628.

The previous prime is 728436617. The next prime is 728436637. The reversal of 728436629 is 926634827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403608100 + 324828529 = 20090^2 + 18023^2 .

It is a cyclic number.

It is not a de Polignac number, because 728436629 - 2⁴ = 728436613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728436659) 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, 364218314 + 364218315.

It is an arithmetic number, because the mean of its divisors is an integer number (364218315).

Almost surely, 2^728436629 is an apocalyptic number.

It is an amenable number.

728436629 is a deficient number, since it is larger than the sum of its proper divisors (1).

728436629 is an equidigital number, since it uses as much as digits as its factorization.

728436629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 728436629 is about 26989.5651873090. The cubic root of 728436629 is about 899.7681003347.

The spelling of 728436629 in words is "seven hundred twenty-eight million, four hundred thirty-six thousand, six hundred twenty-nine".