728801573 has 2 divisors, whose sum is σ = 728801574. Its totient is φ = 728801572.

The previous prime is 728801561. The next prime is 728801597. The reversal of 728801573 is 375108827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667602244 + 61199329 = 25838^2 + 7823^2 .

It is a cyclic number.

It is not a de Polignac number, because 728801573 - 2¹² = 728797477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728801573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728801873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364400786 + 364400787.

It is an arithmetic number, because the mean of its divisors is an integer number (364400787).

Almost surely, 2^728801573 is an apocalyptic number.

It is an amenable number.

728801573 is a deficient number, since it is larger than the sum of its proper divisors (1).

728801573 is an equidigital number, since it uses as much as digits as its factorization.

728801573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 728801573 is about 26996.3251758457. The cubic root of 728801573 is about 899.9183353885.

The spelling of 728801573 in words is "seven hundred twenty-eight million, eight hundred one thousand, five hundred seventy-three".