28136831518 has 8 divisors (see below), whose sum is σ = 42206198112. Its totient is φ = 14068098816.

The previous prime is 28136831479. The next prime is 28136831531. The reversal of 28136831518 is 81513863182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25030 + ... + 238537.

It is an arithmetic number, because the mean of its divisors is an integer number (5275774764).

Almost surely, 2^28136831518 is an apocalyptic number.

28136831518 is a deficient number, since it is larger than the sum of its proper divisors (14069366594).

28136831518 is a wasteful number, since it uses less digits than its factorization.

28136831518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316946.

The product of its digits is 276480, while the sum is 46.

The spelling of 28136831518 in words is "twenty-eight billion, one hundred thirty-six million, eight hundred thirty-one thousand, five hundred eighteen".