28871018859 has 64 divisors (see below), whose sum is σ = 44134612992. Its totient is φ = 16692480000.

The previous prime is 28871018837. The next prime is 28871018863. The reversal of 28871018859 is 95881017882.

It is not a de Polignac number, because 28871018859 - 2¹² = 28871014763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28871018799 and 28871018808.

It is not an unprimeable number, because it can be changed into a prime (28871018819) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 2744109 + ... + 2754609.

It is an arithmetic number, because the mean of its divisors is an integer number (689603328).

Almost surely, 2^28871018859 is an apocalyptic number.

28871018859 is a deficient number, since it is larger than the sum of its proper divisors (15263594133).

28871018859 is a wasteful number, since it uses less digits than its factorization.

28871018859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636.

The product of its (nonzero) digits is 2580480, while the sum is 57.

The spelling of 28871018859 in words is "twenty-eight billion, eight hundred seventy-one million, eighteen thousand, eight hundred fifty-nine".