128043384 has 64 divisors (see below), whose sum is σ = 375744000. Its totient is φ = 35593344.

The previous prime is 128043373. The next prime is 128043397. The reversal of 128043384 is 483340821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4084 + ... + 16515.

It is an arithmetic number, because the mean of its divisors is an integer number (5871000).

Almost surely, 2^128043384 is an apocalyptic number.

128043384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128043384 is an abundant number, since it is smaller than the sum of its proper divisors (247700616).

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

128043384 is a wasteful number, since it uses less digits than its factorization.

128043384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20652 (or 20648 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 128043384 is about 11315.6256565866. The cubic root of 128043384 is about 504.0253514585.

The spelling of 128043384 in words is "one hundred twenty-eight million, forty-three thousand, three hundred eighty-four".