728969514057720 has 96 divisors (see below), whose sum is σ = 2551393299218400. Its totient is φ = 179438649613056.

The previous prime is 728969514057571. The next prime is 728969514057767. The reversal of 728969514057720 is 27750415969827.

728969514057720 is a `hidden beast` number, since 7 + 2 + 8 + 9 + 6 + 9 + 5 + 1 + 40 + 577 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77881353660 + ... + 77881363019.

It is an arithmetic number, because the mean of its divisors is an integer number (26577013533525).

Almost surely, 2^{728969514057720} is an apocalyptic number.

It is an amenable number.

728969514057720 is an abundant number, since it is smaller than the sum of its proper divisors (1822423785160680).

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

728969514057720 is a wasteful number, since it uses less digits than its factorization.

728969514057720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155762716709 (or 155762716702 counting only the distinct ones).

The product of its (nonzero) digits is 533433600, while the sum is 72.

The spelling of 728969514057720 in words is "seven hundred twenty-eight trillion, nine hundred sixty-nine billion, five hundred fourteen million, fifty-seven thousand, seven hundred twenty".