128235000 has 160 divisors (see below), whose sum is σ = 409368960. Its totient is φ = 33456000.

The previous prime is 128234989. The next prime is 128235001. The reversal of 128235000 is 532821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128235001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1244949 + ... + 1245051.

It is an arithmetic number, because the mean of its divisors is an integer number (2558556).

Almost surely, 2^128235000 is an apocalyptic number.

128235000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128235000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204684480).

128235000 is an abundant number, since it is smaller than the sum of its proper divisors (281133960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128235000 is a wasteful number, since it uses less digits than its factorization.

128235000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 128235000 is about 11324.0893673620. The cubic root of 128235000 is about 504.2766495784.

Adding to 128235000 its reverse (532821), we get a palindrome (128767821).

The spelling of 128235000 in words is "one hundred twenty-eight million, two hundred thirty-five thousand".