728812495872 has 264 divisors, whose sum is σ = 2196799787520. Its totient is φ = 232451112960.

The previous prime is 728812495799. The next prime is 728812495889. The reversal of 728812495872 is 278594218827.

728812495872 is a `hidden beast` number, since 7 + 2 + 8 + 8 + 1 + 2 + 49 + 587 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25412613 + ... + 25441275.

Almost surely, 2^728812495872 is an apocalyptic number.

728812495872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728812495872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098399893760).

728812495872 is an abundant number, since it is smaller than the sum of its proper divisors (1467987291648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728812495872 is a wasteful number, since it uses less digits than its factorization.

728812495872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28809 (or 28788 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 728812495872 in words is "seven hundred twenty-eight billion, eight hundred twelve million, four hundred ninety-five thousand, eight hundred seventy-two".