728787347 has 2 divisors, whose sum is σ = 728787348. Its totient is φ = 728787346.

The previous prime is 728787317. The next prime is 728787377. The reversal of 728787347 is 743787827.

728787347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (728787317) and next prime (728787377).

It is a cyclic number.

It is not a de Polignac number, because 728787347 - 2¹⁰ = 728786323 is a prime.

It is a super-2 number, since 2×728787347² = 1062261994294596818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (728787307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364393673 + 364393674.

It is an arithmetic number, because the mean of its divisors is an integer number (364393674).

Almost surely, 2^728787347 is an apocalyptic number.

728787347 is a deficient number, since it is larger than the sum of its proper divisors (1).

728787347 is an equidigital number, since it uses as much as digits as its factorization.

728787347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3687936, while the sum is 53.

The square root of 728787347 is about 26996.0616942546. The cubic root of 728787347 is about 899.9124799668.

The spelling of 728787347 in words is "seven hundred twenty-eight million, seven hundred eighty-seven thousand, three hundred forty-seven".