28585728573 has 4 divisors (see below), whose sum is σ = 38114304768. Its totient is φ = 19057152380.

The previous prime is 28585728547. The next prime is 28585728623. The reversal of 28585728573 is 37582758582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28585728573 - 2¹⁴ = 28585712189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28585728473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764288093 + ... + 4764288098.

It is an arithmetic number, because the mean of its divisors is an integer number (9528576192).

Almost surely, 2^28585728573 is an apocalyptic number.

It is an amenable number.

28585728573 is a deficient number, since it is larger than the sum of its proper divisors (9528576195).

28585728573 is an equidigital number, since it uses as much as digits as its factorization.

28585728573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9528576194.

The product of its digits is 37632000, while the sum is 60.

The spelling of 28585728573 in words is "twenty-eight billion, five hundred eighty-five million, seven hundred twenty-eight thousand, five hundred seventy-three".