128508944 has 40 divisors (see below), whose sum is σ = 254465112. Its totient is φ = 62853120.

The previous prime is 128508943. The next prime is 128508949. The reversal of 128508944 is 449805821.

It can be written as a sum of positive squares in 4 ways, for example, as 547600 + 127961344 = 740^2 + 11312^2 .

It is not an unprimeable number, because it can be changed into a prime (128508943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344342 + ... + 344714.

Almost surely, 2^128508944 is an apocalyptic number.

It is an amenable number.

128508944 is a deficient number, since it is larger than the sum of its proper divisors (125956168).

128508944 is a wasteful number, since it uses less digits than its factorization.

128508944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 128508944 is about 11336.1785448184. The cubic root of 128508944 is about 504.6354837725.

The spelling of 128508944 in words is "one hundred twenty-eight million, five hundred eight thousand, nine hundred forty-four".