28136017508 has 12 divisors (see below), whose sum is σ = 50826354432. Its totient is φ = 13614201960.

The previous prime is 28136017499. The next prime is 28136017543. The reversal of 28136017508 is 80571063182.

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, 113451560 + ... + 113451807.

It is an arithmetic number, because the mean of its divisors is an integer number (4235529536).

Almost surely, 2^28136017508 is an apocalyptic number.

It is an amenable number.

28136017508 is a deficient number, since it is larger than the sum of its proper divisors (22690336924).

28136017508 is a wasteful number, since it uses less digits than its factorization.

28136017508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226903402 (or 226903400 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 28136017508 in words is "twenty-eight billion, one hundred thirty-six million, seventeen thousand, five hundred eight".