728437347 has 32 divisors (see below), whose sum is σ = 1228469760. Its totient is φ = 422278560.

The previous prime is 728437331. The next prime is 728437361. The reversal of 728437347 is 743734827.

728437347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728437347 - 2⁴ = 728437331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728437397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46488 + ... + 60149.

It is an arithmetic number, because the mean of its divisors is an integer number (38389680).

Almost surely, 2^728437347 is an apocalyptic number.

728437347 is a deficient number, since it is larger than the sum of its proper divisors (500032413).

728437347 is a wasteful number, since it uses less digits than its factorization.

728437347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106680 (or 106674 counting only the distinct ones).

The product of its digits is 790272, while the sum is 45.

The square root of 728437347 is about 26989.5784887427. The cubic root of 728437347 is about 899.7683959602.

The spelling of 728437347 in words is "seven hundred twenty-eight million, four hundred thirty-seven thousand, three hundred forty-seven".