28567866087 has 48 divisors (see below), whose sum is σ = 44427513312. Its totient is φ = 17624217600.

The previous prime is 28567866079. The next prime is 28567866091. The reversal of 28567866087 is 78066876582.

28567866087 is a `hidden beast` number, since 2 + 8 + 567 + 8 + 6 + 60 + 8 + 7 = 666.

It is not a de Polignac number, because 28567866087 - 2³ = 28567866079 is a prime.

It is a super-2 number, since 2×28567866087² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28567866017) 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 47 ways as a sum of consecutive naturals, for example, 6158533 + ... + 6163169.

It is an arithmetic number, because the mean of its divisors is an integer number (925573194).

Almost surely, 2^28567866087 is an apocalyptic number.

28567866087 is a deficient number, since it is larger than the sum of its proper divisors (15859647225).

28567866087 is a wasteful number, since it uses less digits than its factorization.

28567866087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328 (or 5325 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 28567866087 in words is "twenty-eight billion, five hundred sixty-seven million, eight hundred sixty-six thousand, eighty-seven".