728588813 has 2 divisors, whose sum is σ = 728588814. Its totient is φ = 728588812.

The previous prime is 728588789. The next prime is 728588821. The reversal of 728588813 is 318885827.

728588813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 572788489 + 155800324 = 23933^2 + 12482^2 .

It is a cyclic number.

It is not a de Polignac number, because 728588813 - 2⁸ = 728588557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728581813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364294406 + 364294407.

It is an arithmetic number, because the mean of its divisors is an integer number (364294407).

Almost surely, 2^728588813 is an apocalyptic number.

It is an amenable number.

728588813 is a deficient number, since it is larger than the sum of its proper divisors (1).

728588813 is an equidigital number, since it uses as much as digits as its factorization.

728588813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 50.

The square root of 728588813 is about 26992.3843518871. The cubic root of 728588813 is about 899.8307554184.

The spelling of 728588813 in words is "seven hundred twenty-eight million, five hundred eighty-eight thousand, eight hundred thirteen".