127791328 has 24 divisors (see below), whose sum is σ = 287530992. Its totient is φ = 54767616.

The previous prime is 127791319. The next prime is 127791343. The reversal of 127791328 is 823197721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285025 + ... + 285472.

It is an arithmetic number, because the mean of its divisors is an integer number (11980458).

Almost surely, 2^127791328 is an apocalyptic number.

It is an amenable number.

127791328 is an abundant number, since it is smaller than the sum of its proper divisors (159739664).

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

127791328 is an equidigital number, since it uses as much as digits as its factorization.

127791328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570514 (or 570506 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 127791328 is about 11304.4826507010. The cubic root of 127791328 is about 503.6944061614.

The spelling of 127791328 in words is "one hundred twenty-seven million, seven hundred ninety-one thousand, three hundred twenty-eight".