28132687916 has 12 divisors (see below), whose sum is σ = 50279697888. Its totient is φ = 13767059952.

The previous prime is 28132687907. The next prime is 28132687931. The reversal of 28132687916 is 61978623182.

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, 74820791 + ... + 74821166.

It is an arithmetic number, because the mean of its divisors is an integer number (4189974824).

Almost surely, 2^28132687916 is an apocalyptic number.

It is an amenable number.

28132687916 is a deficient number, since it is larger than the sum of its proper divisors (22147009972).

28132687916 is a wasteful number, since it uses less digits than its factorization.

28132687916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149642008 (or 149642006 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The spelling of 28132687916 in words is "twenty-eight billion, one hundred thirty-two million, six hundred eighty-seven thousand, nine hundred sixteen".