28687514115 has 16 divisors (see below), whose sum is σ = 49430793888. Its totient is φ = 14123083776.

The previous prime is 28687514101. The next prime is 28687514117. The reversal of 28687514115 is 51141578682.

It is not a de Polignac number, because 28687514115 - 2⁸ = 28687513859 is a prime.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73557534 + ... + 73557923.

It is an arithmetic number, because the mean of its divisors is an integer number (3089424618).

Almost surely, 2^28687514115 is an apocalyptic number.

28687514115 is a deficient number, since it is larger than the sum of its proper divisors (20743279773).

28687514115 is a wasteful number, since it uses less digits than its factorization.

28687514115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147115478.

The product of its digits is 537600, while the sum is 48.

The spelling of 28687514115 in words is "twenty-eight billion, six hundred eighty-seven million, five hundred fourteen thousand, one hundred fifteen".