728280307 has 2 divisors, whose sum is σ = 728280308. Its totient is φ = 728280306.

The previous prime is 728280283. The next prime is 728280331. The reversal of 728280307 is 703082827.

It is a balanced prime because it is at equal distance from previous prime (728280283) and next prime (728280331).

It is an emirp because it is prime and its reverse (703082827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728280307 - 2¹⁵ = 728247539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (728280337) 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, 364140153 + 364140154.

It is an arithmetic number, because the mean of its divisors is an integer number (364140154).

Almost surely, 2^728280307 is an apocalyptic number.

728280307 is a deficient number, since it is larger than the sum of its proper divisors (1).

728280307 is an equidigital number, since it uses as much as digits as its factorization.

728280307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 728280307 is about 26986.6690608530. The cubic root of 728280307 is about 899.7037325247.

The spelling of 728280307 in words is "seven hundred twenty-eight million, two hundred eighty thousand, three hundred seven".