28858728599 has 4 divisors (see below), whose sum is σ = 29789655360. Its totient is φ = 27927801840.

The previous prime is 28858728581. The next prime is 28858728623. The reversal of 28858728599 is 99582785882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28858728599 - 2²⁰ = 28857680023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28858728529) 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, 465463334 + ... + 465463395.

It is an arithmetic number, because the mean of its divisors is an integer number (7447413840).

Almost surely, 2^28858728599 is an apocalyptic number.

28858728599 is a deficient number, since it is larger than the sum of its proper divisors (930926761).

28858728599 is an equidigital number, since it uses as much as digits as its factorization.

28858728599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930926760.

The product of its digits is 232243200, while the sum is 71.

The spelling of 28858728599 in words is "twenty-eight billion, eight hundred fifty-eight million, seven hundred twenty-eight thousand, five hundred ninety-nine".