728708469789 has 8 divisors (see below), whose sum is σ = 971621183872. Its totient is φ = 485800701120.

The previous prime is 728708469763. The next prime is 728708469799. The reversal of 728708469789 is 987964807827.

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

It is not a de Polignac number, because 728708469789 - 2⁹ = 728708469277 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 728708469789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728708469719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877669 + ... + 1492554.

It is an arithmetic number, because the mean of its divisors is an integer number (121452647984).

Almost surely, 2^728708469789 is an apocalyptic number.

It is an amenable number.

728708469789 is a deficient number, since it is larger than the sum of its proper divisors (242912714083).

728708469789 is a wasteful number, since it uses less digits than its factorization.

728708469789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472707.

The product of its (nonzero) digits is 682795008, while the sum is 75.

The spelling of 728708469789 in words is "seven hundred twenty-eight billion, seven hundred eight million, four hundred sixty-nine thousand, seven hundred eighty-nine".