28056108012 has 12 divisors (see below), whose sum is σ = 65464252056. Its totient is φ = 9352036000.

The previous prime is 28056108011. The next prime is 28056108013. The reversal of 28056108012 is 21080165082.

It is an interprime number because it is at equal distance from previous prime (28056108011) and next prime (28056108013).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169004489 + ... + 1169004512.

It is an arithmetic number, because the mean of its divisors is an integer number (5455354338).

Almost surely, 2^28056108012 is an apocalyptic number.

It is an amenable number.

28056108012 is an abundant number, since it is smaller than the sum of its proper divisors (37408144044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28056108012 is a wasteful number, since it uses less digits than its factorization.

28056108012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338009008 (or 2338009006 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 28056108012 in words is "twenty-eight billion, fifty-six million, one hundred eight thousand, twelve".