128379835 has 32 divisors (see below), whose sum is σ = 170698752. Its totient is φ = 92259840.

The previous prime is 128379829. The next prime is 128379847. The reversal of 128379835 is 538973821.

It is not a de Polignac number, because 128379835 - 2⁷ = 128379707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218412 + ... + 218998.

It is an arithmetic number, because the mean of its divisors is an integer number (5334336).

Almost surely, 2^128379835 is an apocalyptic number.

128379835 is a deficient number, since it is larger than the sum of its proper divisors (42318917).

128379835 is a wasteful number, since it uses less digits than its factorization.

128379835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its digits is 362880, while the sum is 46.

The square root of 128379835 is about 11330.4825581261. The cubic root of 128379835 is about 504.4664298740.

It can be divided in two parts, 1283 and 79835, that added together give a palindrome (81118).

The spelling of 128379835 in words is "one hundred twenty-eight million, three hundred seventy-nine thousand, eight hundred thirty-five".