728702011 has 2 divisors, whose sum is σ = 728702012. Its totient is φ = 728702010.

The previous prime is 728701999. The next prime is 728702017. The reversal of 728702011 is 110207827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728702011 - 2⁹ = 728701499 is a prime.

It is not a weakly prime, because it can be changed into another prime (728702017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364351005 + 364351006.

It is an arithmetic number, because the mean of its divisors is an integer number (364351006).

Almost surely, 2^728702011 is an apocalyptic number.

728702011 is a deficient number, since it is larger than the sum of its proper divisors (1).

728702011 is an equidigital number, since it uses as much as digits as its factorization.

728702011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 728702011 is about 26994.4811211477. The cubic root of 728702011 is about 899.8773540693.

Adding to 728702011 its reverse (110207827), we get a palindrome (838909838).

The spelling of 728702011 in words is "seven hundred twenty-eight million, seven hundred two thousand, eleven".