728730899 has 8 divisors (see below), whose sum is σ = 788217360. Its totient is φ = 669734496.

The previous prime is 728730887. The next prime is 728730913. The reversal of 728730899 is 998037827.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728730899 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 728730899.

It is not an unprimeable number, because it can be changed into a prime (728730809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119417 + ... + 125370.

It is an arithmetic number, because the mean of its divisors is an integer number (98527170).

Almost surely, 2^728730899 is an apocalyptic number.

728730899 is a deficient number, since it is larger than the sum of its proper divisors (59486461).

728730899 is a wasteful number, since it uses less digits than its factorization.

728730899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245029.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 728730899 is about 26995.0161881781. The cubic root of 728730899 is about 899.8892452187.

The spelling of 728730899 in words is "seven hundred twenty-eight million, seven hundred thirty thousand, eight hundred ninety-nine".