28753558508 has 12 divisors (see below), whose sum is σ = 50319944640. Its totient is φ = 14376431472.

The previous prime is 28753558469. The next prime is 28753558517. The reversal of 28753558508 is 80585535782.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217610 + ... + 323822.

It is an arithmetic number, because the mean of its divisors is an integer number (4193328720).

Almost surely, 2^28753558508 is an apocalyptic number.

It is an amenable number.

28753558508 is a deficient number, since it is larger than the sum of its proper divisors (21566386132).

28753558508 is a wasteful number, since it uses less digits than its factorization.

28753558508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173896 (or 173894 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 56.

The spelling of 28753558508 in words is "twenty-eight billion, seven hundred fifty-three million, five hundred fifty-eight thousand, five hundred eight".