28256528108 has 12 divisors (see below), whose sum is σ = 49450318680. Its totient is φ = 14127865632.

The previous prime is 28256528021. The next prime is 28256528119. The reversal of 28256528108 is 80182565282.

It is a happy number.

It is a super-3 number, since 3×28256528108³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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, 108083 + ... + 261141.

It is an arithmetic number, because the mean of its divisors is an integer number (4120859890).

Almost surely, 2^28256528108 is an apocalyptic number.

It is an amenable number.

28256528108 is a deficient number, since it is larger than the sum of its proper divisors (21193790572).

28256528108 is a wasteful number, since it uses less digits than its factorization.

28256528108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199216 (or 199214 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 28256528108 in words is "twenty-eight billion, two hundred fifty-six million, five hundred twenty-eight thousand, one hundred eight".