28728573485773 has 8 divisors (see below), whose sum is σ = 33502709604800. Its totient is φ = 24624491558940.

The previous prime is 28728573485753. The next prime is 28728573485879. The reversal of 28728573485773 is 37758437582782.

It is not a de Polignac number, because 28728573485773 - 2⁴¹ = 26529550230221 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 28728573485773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28728573485723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41878386663 + ... + 41878387348.

It is an arithmetic number, because the mean of its divisors is an integer number (4187838700600).

Almost surely, 2^{28728573485773} is an apocalyptic number.

It is an amenable number.

28728573485773 is a deficient number, since it is larger than the sum of its proper divisors (4774136119027).

28728573485773 is an frugal number, since it uses more digits than its factorization.

28728573485773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83756774032 (or 83756774018 counting only the distinct ones).

The product of its digits is 4425523200, while the sum is 76.

The spelling of 28728573485773 in words is "twenty-eight trillion, seven hundred twenty-eight billion, five hundred seventy-three million, four hundred eighty-five thousand, seven hundred seventy-three".