28056108015 has 96 divisors (see below), whose sum is σ = 55592671680. Its totient is φ = 12966801408.

The previous prime is 28056108013. The next prime is 28056108061. The reversal of 28056108015 is 51080165082.

28056108015 is a `hidden beast` number, since 2 + 8 + 0 + 561 + 0 + 80 + 15 = 666.

It is not a de Polignac number, because 28056108015 - 2¹ = 28056108013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056108011) 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 95 ways as a sum of consecutive naturals, for example, 4163589 + ... + 4170321.

It is an arithmetic number, because the mean of its divisors is an integer number (579090330).

Almost surely, 2^28056108015 is an apocalyptic number.

28056108015 is a deficient number, since it is larger than the sum of its proper divisors (27536563665).

28056108015 is a wasteful number, since it uses less digits than its factorization.

28056108015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193 (or 7190 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 28056108015 in words is "twenty-eight billion, fifty-six million, one hundred eight thousand, fifteen".