128544896 has 32 divisors (see below), whose sum is σ = 256718700. Its totient is φ = 64113664.

The previous prime is 128544887. The next prime is 128544917. The reversal of 128544896 is 698445821.

It can be written as a sum of positive squares in 2 ways, for example, as 128504896 + 40000 = 11336^2 + 200^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 128544896.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 64166 + ... + 66138.

Almost surely, 2^128544896 is an apocalyptic number.

128544896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128544896 is a deficient number, since it is larger than the sum of its proper divisors (128173804).

128544896 is an equidigital number, since it uses as much as digits as its factorization.

128544896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496 (or 2484 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 128544896 is about 11337.7641534828. The cubic root of 128544896 is about 504.6825387679.

The spelling of 128544896 in words is "one hundred twenty-eight million, five hundred forty-four thousand, eight hundred ninety-six".