128336329 has 4 divisors (see below), whose sum is σ = 140003280. Its totient is φ = 116669380.

The previous prime is 128336321. The next prime is 128336359. The reversal of 128336329 is 923633821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 923633821 = 11 ⋅83966711.

It is a cyclic number.

It is not a de Polignac number, because 128336329 - 2³ = 128336321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128336321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5833459 + ... + 5833480.

It is an arithmetic number, because the mean of its divisors is an integer number (35000820).

Almost surely, 2^128336329 is an apocalyptic number.

It is an amenable number.

128336329 is a deficient number, since it is larger than the sum of its proper divisors (11666951).

128336329 is a wasteful number, since it uses less digits than its factorization.

128336329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666950.

The product of its digits is 46656, while the sum is 37.

The square root of 128336329 is about 11328.5625301712. The cubic root of 128336329 is about 504.4094380674.

The spelling of 128336329 in words is "one hundred twenty-eight million, three hundred thirty-six thousand, three hundred twenty-nine".