728491194827 has 32 divisors (see below), whose sum is σ = 847702848000. Its totient is φ = 624251564640.

The previous prime is 728491194779. The next prime is 728491194839.

728491194827 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 728491194827 - 2²⁴ = 728474417611 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 728491194827.

It is not an unprimeable number, because it can be changed into a prime (728491194887) 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, 4960133 + ... + 5104889.

It is an arithmetic number, because the mean of its divisors is an integer number (26490714000).

Almost surely, 2^728491194827 is an apocalyptic number.

728491194827 is a deficient number, since it is larger than the sum of its proper divisors (119211653173).

728491194827 is a wasteful number, since it uses less digits than its factorization.

728491194827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145008 (or 144986 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 62.

The spelling of 728491194827 in words is "seven hundred twenty-eight billion, four hundred ninety-one million, one hundred ninety-four thousand, eight hundred twenty-seven".