728042093 has 2 divisors, whose sum is σ = 728042094. Its totient is φ = 728042092.

The previous prime is 728042089. The next prime is 728042141. The reversal of 728042093 is 390240827.

728042093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451052644 + 276989449 = 21238^2 + 16643^2 .

It is an emirp because it is prime and its reverse (390240827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728042093 - 2² = 728042089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728045093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364021046 + 364021047.

It is an arithmetic number, because the mean of its divisors is an integer number (364021047).

Almost surely, 2^728042093 is an apocalyptic number.

It is an amenable number.

728042093 is a deficient number, since it is larger than the sum of its proper divisors (1).

728042093 is an equidigital number, since it uses as much as digits as its factorization.

728042093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 728042093 is about 26982.2551503761. The cubic root of 728042093 is about 899.6056268024.

The spelling of 728042093 in words is "seven hundred twenty-eight million, forty-two thousand, ninety-three".