128404382 has 8 divisors (see below), whose sum is σ = 193054752. Its totient is φ = 64052800.

The previous prime is 128404363. The next prime is 128404439. The reversal of 128404382 is 283404821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 73619 + ... + 75342.

It is an arithmetic number, because the mean of its divisors is an integer number (24131844).

Almost surely, 2^128404382 is an apocalyptic number.

128404382 is a deficient number, since it is larger than the sum of its proper divisors (64650370).

128404382 is a wasteful number, since it uses less digits than its factorization.

128404382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149394.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 128404382 is about 11331.5657347076. The cubic root of 128404382 is about 504.4985801679.

The spelling of 128404382 in words is "one hundred twenty-eight million, four hundred four thousand, three hundred eighty-two".