27728667088 has 40 divisors (see below), whose sum is σ = 56900733120. Its totient is φ = 13045071360.

The previous prime is 27728667079. The next prime is 27728667121. The reversal of 27728667088 is 88076682772.

It is a congruent number.

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, 1100293 + ... + 1125211.

It is an arithmetic number, because the mean of its divisors is an integer number (1422518328).

Almost surely, 2^27728667088 is an apocalyptic number.

It is an amenable number.

27728667088 is an abundant number, since it is smaller than the sum of its proper divisors (29172066032).

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

27728667088 is a wasteful number, since it uses less digits than its factorization.

27728667088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29035 (or 29029 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 61.

The spelling of 27728667088 in words is "twenty-seven billion, seven hundred twenty-eight million, six hundred sixty-seven thousand, eighty-eight".