128033636 has 12 divisors (see below), whose sum is σ = 225770160. Its totient is φ = 63527880.

The previous prime is 128033629. The next prime is 128033639. The reversal of 128033636 is 636330821.

It is a super-2 number, since 2×128033636² = 32785223894760992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (128033639) 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, 121646 + ... + 122693.

It is an arithmetic number, because the mean of its divisors is an integer number (18814180).

Almost surely, 2^128033636 is an apocalyptic number.

It is an amenable number.

128033636 is a deficient number, since it is larger than the sum of its proper divisors (97736524).

128033636 is a wasteful number, since it uses less digits than its factorization.

128033636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244474 (or 244472 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 128033636 is about 11315.1949165713. The cubic root of 128033636 is about 504.0125605755.

The spelling of 128033636 in words is "one hundred twenty-eight million, thirty-three thousand, six hundred thirty-six".