27898889872 has 40 divisors (see below), whose sum is σ = 61785001856. Its totient is φ = 11954946816.

The previous prime is 27898889869. The next prime is 27898889917.

27898889872 is nontrivially palindromic in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1043293 + ... + 1069699.

Almost surely, 2^27898889872 is an apocalyptic number.

It is an amenable number.

27898889872 is an abundant number, since it is smaller than the sum of its proper divisors (33886111984).

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

27898889872 is a wasteful number, since it uses less digits than its factorization.

27898889872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35855 (or 35849 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 76.

The spelling of 27898889872 in words is "twenty-seven billion, eight hundred ninety-eight million, eight hundred eighty-nine thousand, eight hundred seventy-two".