128383968 has 24 divisors (see below), whose sum is σ = 337008168. Its totient is φ = 42794624.

The previous prime is 128383961. The next prime is 128383973. The reversal of 128383968 is 869383821.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128383961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668571 + ... + 668762.

It is an arithmetic number, because the mean of its divisors is an integer number (14042007).

Almost surely, 2^128383968 is an apocalyptic number.

It is an amenable number.

128383968 is an abundant number, since it is smaller than the sum of its proper divisors (208624200).

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

128383968 is a wasteful number, since it uses less digits than its factorization.

128383968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337346 (or 1337338 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 128383968 is about 11330.6649407702. The cubic root of 128383968 is about 504.4718433342.

The spelling of 128383968 in words is "one hundred twenty-eight million, three hundred eighty-three thousand, nine hundred sixty-eight".