128816448 has 28 divisors (see below), whose sum is σ = 340827360. Its totient is φ = 42938752.

The previous prime is 128816431. The next prime is 128816449. The reversal of 128816448 is 844618821.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128816449) 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 3 ways as a sum of consecutive naturals, for example, 335268 + ... + 335651.

Almost surely, 2^128816448 is an apocalyptic number.

It is an amenable number.

128816448 is an abundant number, since it is smaller than the sum of its proper divisors (212010912).

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

128816448 is an equidigital number, since it uses as much as digits as its factorization.

128816448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670934 (or 670924 counting only the distinct ones).

The product of its digits is 98304, while the sum is 42.

The square root of 128816448 is about 11349.7333889391. The cubic root of 128816448 is about 505.0376706206.

The spelling of 128816448 in words is "one hundred twenty-eight million, eight hundred sixteen thousand, four hundred forty-eight".