728026361 has 2 divisors, whose sum is σ = 728026362. Its totient is φ = 728026360.

The previous prime is 728026333. The next prime is 728026379. The reversal of 728026361 is 163620827.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 634788025 + 93238336 = 25195^2 + 9656^2 .

It is a cyclic number.

It is not a de Polignac number, because 728026361 - 2¹⁸ = 727764217 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (728026961) 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, 364013180 + 364013181.

It is an arithmetic number, because the mean of its divisors is an integer number (364013181).

Almost surely, 2^728026361 is an apocalyptic number.

It is an amenable number.

728026361 is a deficient number, since it is larger than the sum of its proper divisors (1).

728026361 is an equidigital number, since it uses as much as digits as its factorization.

728026361 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 728026361 is about 26981.9636238729. The cubic root of 728026361 is about 899.5991470041.

The spelling of 728026361 in words is "seven hundred twenty-eight million, twenty-six thousand, three hundred sixty-one".