128385229 has 16 divisors (see below), whose sum is σ = 154992640. Its totient is φ = 104010480.

The previous prime is 128385211. The next prime is 128385307. The reversal of 128385229 is 922583821.

It is not a de Polignac number, because 128385229 - 2⁵ = 128385197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128385191 and 128385200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128385629) 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 15 ways as a sum of consecutive naturals, for example, 2452 + ... + 16210.

It is an arithmetic number, because the mean of its divisors is an integer number (9687040).

Almost surely, 2^128385229 is an apocalyptic number.

It is an amenable number.

128385229 is a deficient number, since it is larger than the sum of its proper divisors (26607411).

128385229 is a wasteful number, since it uses less digits than its factorization.

128385229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13840.

The product of its digits is 69120, while the sum is 40.

The square root of 128385229 is about 11330.7205860881. The cubic root of 128385229 is about 504.4734949862.

The spelling of 128385229 in words is "one hundred twenty-eight million, three hundred eighty-five thousand, two hundred twenty-nine".