128944944 has 60 divisors (see below), whose sum is σ = 379867800. Its totient is φ = 40718592.

The previous prime is 128944931. The next prime is 128944957. The reversal of 128944944 is 449449821.

It is an interprime number because it is at equal distance from previous prime (128944931) and next prime (128944957).

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

It is a self number, because there is not a number n which added to its sum of digits gives 128944944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20829 + ... + 26300.

It is an arithmetic number, because the mean of its divisors is an integer number (6331130).

Almost surely, 2^128944944 is an apocalyptic number.

It is an amenable number.

128944944 is an abundant number, since it is smaller than the sum of its proper divisors (250922856).

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

128944944 is a wasteful number, since it uses less digits than its factorization.

128944944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47162 (or 47153 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 128944944 is about 11355.3927276867. The cubic root of 128944944 is about 505.2055419225.

The spelling of 128944944 in words is "one hundred twenty-eight million, nine hundred forty-four thousand, nine hundred forty-four".