728518297 has 8 divisors (see below), whose sum is σ = 784768320. Its totient is φ = 672298320.

The previous prime is 728518247. The next prime is 728518327. The reversal of 728518297 is 792815827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 728518297 - 2¹⁵ = 728485529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728518297.

It is not an unprimeable number, because it can be changed into a prime (728518207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86604 + ... + 94642.

It is an arithmetic number, because the mean of its divisors is an integer number (98096040).

Almost surely, 2^728518297 is an apocalyptic number.

It is an amenable number.

728518297 is a deficient number, since it is larger than the sum of its proper divisors (56250023).

728518297 is a wasteful number, since it uses less digits than its factorization.

728518297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15023.

The product of its digits is 564480, while the sum is 49.

The square root of 728518297 is about 26991.0780999944. The cubic root of 728518297 is about 899.8017246347.

The spelling of 728518297 in words is "seven hundred twenty-eight million, five hundred eighteen thousand, two hundred ninety-seven".