127887789828 has 48 divisors (see below), whose sum is σ = 299124483840. Its totient is φ = 42526557984.

The previous prime is 127887789811. The next prime is 127887789853. The reversal of 127887789828 is 828987788721.

127887789828 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 127887789828.

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 15 ways as a sum of consecutive naturals, for example, 12608383 + ... + 12618521.

It is an arithmetic number, because the mean of its divisors is an integer number (6231760080).

Almost surely, 2^127887789828 is an apocalyptic number.

It is an amenable number.

127887789828 is an abundant number, since it is smaller than the sum of its proper divisors (171236694012).

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

127887789828 is a wasteful number, since it uses less digits than its factorization.

127887789828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12576 (or 12574 counting only the distinct ones).

The product of its digits is 404619264, while the sum is 75.

The spelling of 127887789828 in words is "one hundred twenty-seven billion, eight hundred eighty-seven million, seven hundred eighty-nine thousand, eight hundred twenty-eight".