128504944 has 20 divisors (see below), whose sum is σ = 250773880. Its totient is φ = 63789120.

The previous prime is 128504917. The next prime is 128504977. The reversal of 128504944 is 449405821.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26667 + ... + 31114.

It is an arithmetic number, because the mean of its divisors is an integer number (12538694).

Almost surely, 2^128504944 is an apocalyptic number.

It is an amenable number.

128504944 is a deficient number, since it is larger than the sum of its proper divisors (122268936).

128504944 is a wasteful number, since it uses less digits than its factorization.

128504944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57928 (or 57922 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 128504944 is about 11336.0021171487. The cubic root of 128504944 is about 504.6302479167.

The spelling of 128504944 in words is "one hundred twenty-eight million, five hundred four thousand, nine hundred forty-four".