728302247 has 2 divisors, whose sum is σ = 728302248. Its totient is φ = 728302246.

The previous prime is 728302193. The next prime is 728302283. The reversal of 728302247 is 742203827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728302247 - 2¹⁴ = 728285863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728302297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364151123 + 364151124.

It is an arithmetic number, because the mean of its divisors is an integer number (364151124).

Almost surely, 2^728302247 is an apocalyptic number.

728302247 is a deficient number, since it is larger than the sum of its proper divisors (1).

728302247 is an equidigital number, since it uses as much as digits as its factorization.

728302247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 728302247 is about 26987.0755547910. The cubic root of 728302247 is about 899.7127671878.

The spelling of 728302247 in words is "seven hundred twenty-eight million, three hundred two thousand, two hundred forty-seven".