128385935 has 4 divisors (see below), whose sum is σ = 154063128. Its totient is φ = 102708744.

The previous prime is 128385913. The next prime is 128385937. The reversal of 128385935 is 539583821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128385935 - 2¹⁰ = 128384911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128385937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12838589 + ... + 12838598.

It is an arithmetic number, because the mean of its divisors is an integer number (38515782).

Almost surely, 2^128385935 is an apocalyptic number.

128385935 is a deficient number, since it is larger than the sum of its proper divisors (25677193).

128385935 is an equidigital number, since it uses as much as digits as its factorization.

128385935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25677192.

The product of its digits is 259200, while the sum is 44.

The square root of 128385935 is about 11330.7517402863. The cubic root of 128385935 is about 504.4744196970.

The spelling of 128385935 in words is "one hundred twenty-eight million, three hundred eighty-five thousand, nine hundred thirty-five".