28550235508 has 24 divisors (see below), whose sum is σ = 50391606272. Its totient is φ = 14152791744.

The previous prime is 28550235479. The next prime is 28550235521. The reversal of 28550235508 is 80553205582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734416 + ... + 772312.

Almost surely, 2^28550235508 is an apocalyptic number.

It is an amenable number.

28550235508 is a deficient number, since it is larger than the sum of its proper divisors (21841370764).

28550235508 is a wasteful number, since it uses less digits than its factorization.

28550235508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39511 (or 39509 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 43.

The spelling of 28550235508 in words is "twenty-eight billion, five hundred fifty million, two hundred thirty-five thousand, five hundred eight".