28687514116 has 24 divisors (see below), whose sum is σ = 52939363680. Its totient is φ = 13564665792.

The previous prime is 28687514101. The next prime is 28687514117. The reversal of 28687514116 is 61141578682.

It is a super-2 number, since 2×28687514116² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28687514116.

It is not an unprimeable number, because it can be changed into a prime (28687514117) by changing a digit.

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, 292441 + ... + 378016.

It is an arithmetic number, because the mean of its divisors is an integer number (2205806820).

Almost surely, 2^28687514116 is an apocalyptic number.

It is an amenable number.

28687514116 is a deficient number, since it is larger than the sum of its proper divisors (24251849564).

28687514116 is a wasteful number, since it uses less digits than its factorization.

28687514116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671043 (or 671041 counting only the distinct ones).

The product of its digits is 645120, while the sum is 49.

The spelling of 28687514116 in words is "twenty-eight billion, six hundred eighty-seven million, five hundred fourteen thousand, one hundred sixteen".