128235933 has 64 divisors (see below), whose sum is σ = 229785600. Its totient is φ = 69128640.

The previous prime is 128235931. The next prime is 128235937. The reversal of 128235933 is 339532821.

It is not a de Polignac number, because 128235933 - 2¹ = 128235931 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128235931) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251683 + ... + 252191.

It is an arithmetic number, because the mean of its divisors is an integer number (3590400).

Almost surely, 2^128235933 is an apocalyptic number.

It is an amenable number.

128235933 is a deficient number, since it is larger than the sum of its proper divisors (101549667).

128235933 is a wasteful number, since it uses less digits than its factorization.

128235933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 593 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 128235933 is about 11324.1305626525. The cubic root of 128235933 is about 504.2778725648.

The spelling of 128235933 in words is "one hundred twenty-eight million, two hundred thirty-five thousand, nine hundred thirty-three".