28136816876 has 12 divisors (see below), whose sum is σ = 56273633808. Its totient is φ = 12058635792.

The previous prime is 28136816797. The next prime is 28136816879. The reversal of 28136816876 is 67861863182.

28136816876 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28136816879) 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, 502443131 + ... + 502443186.

It is an arithmetic number, because the mean of its divisors is an integer number (4689469484).

Almost surely, 2^28136816876 is an apocalyptic number.

It is an amenable number.

28136816876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28136816876 is a wasteful number, since it uses less digits than its factorization.

28136816876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004886328 (or 1004886326 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The spelling of 28136816876 in words is "twenty-eight billion, one hundred thirty-six million, eight hundred sixteen thousand, eight hundred seventy-six".