27289428648 has 32 divisors (see below), whose sum is σ = 68227906560. Its totient is φ = 9095898240.

The previous prime is 27289428589. The next prime is 27289428667. The reversal of 27289428648 is 84682498272.

It is a junction number, because it is equal to n+sod(n) for n = 27289428591 and 27289428600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531468 + ... + 580548.

It is an arithmetic number, because the mean of its divisors is an integer number (2132122080).

Almost surely, 2^27289428648 is an apocalyptic number.

It is an amenable number.

27289428648 is an abundant number, since it is smaller than the sum of its proper divisors (40938477912).

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

27289428648 is a wasteful number, since it uses less digits than its factorization.

27289428648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72257 (or 72253 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 60.

The spelling of 27289428648 in words is "twenty-seven billion, two hundred eighty-nine million, four hundred twenty-eight thousand, six hundred forty-eight".