728847907 has 2 divisors, whose sum is σ = 728847908. Its totient is φ = 728847906.

The previous prime is 728847887. The next prime is 728847929. The reversal of 728847907 is 709748827.

It is a happy number.

728847907 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728847907 is a prime.

It is not a weakly prime, because it can be changed into another prime (728847937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364423953 + 364423954.

It is an arithmetic number, because the mean of its divisors is an integer number (364423954).

Almost surely, 2^728847907 is an apocalyptic number.

728847907 is a deficient number, since it is larger than the sum of its proper divisors (1).

728847907 is an equidigital number, since it uses as much as digits as its factorization.

728847907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The square root of 728847907 is about 26997.1833160424. The cubic root of 728847907 is about 899.9374059348.

The spelling of 728847907 in words is "seven hundred twenty-eight million, eight hundred forty-seven thousand, nine hundred seven".