728808644293 has 8 divisors (see below), whose sum is σ = 739232796096. Its totient is φ = 718388916000.

The previous prime is 728808644251. The next prime is 728808644297. The reversal of 728808644293 is 392446808827.

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-728808644293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728808644297) 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, 773296 + ... + 1433737.

It is an arithmetic number, because the mean of its divisors is an integer number (92404099512).

Almost surely, 2^728808644293 is an apocalyptic number.

It is an amenable number.

728808644293 is a deficient number, since it is larger than the sum of its proper divisors (10424151803).

728808644293 is a wasteful number, since it uses less digits than its factorization.

728808644293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211755.

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 728808644293 in words is "seven hundred twenty-eight billion, eight hundred eight million, six hundred forty-four thousand, two hundred ninety-three".