128085764 has 24 divisors (see below), whose sum is σ = 237552000. Its totient is φ = 60259680.

The previous prime is 128085761. The next prime is 128085799. The reversal of 128085764 is 467580821.

It is not an unprimeable number, because it can be changed into a prime (128085761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5669 + ... + 16979.

It is an arithmetic number, because the mean of its divisors is an integer number (9898000).

Almost surely, 2^128085764 is an apocalyptic number.

It is an amenable number.

128085764 is a deficient number, since it is larger than the sum of its proper divisors (109466236).

128085764 is a wasteful number, since it uses less digits than its factorization.

128085764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11483 (or 11481 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 128085764 is about 11317.4981334215. The cubic root of 128085764 is about 504.0809530249.

The spelling of 128085764 in words is "one hundred twenty-eight million, eighty-five thousand, seven hundred sixty-four".