128033812 has 12 divisors (see below), whose sum is σ = 224150080. Its totient is φ = 63990936.

The previous prime is 128033809. The next prime is 128033819. The reversal of 128033812 is 218330821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128033819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8389 + ... + 18067.

Almost surely, 2^128033812 is an apocalyptic number.

It is an amenable number.

128033812 is a deficient number, since it is larger than the sum of its proper divisors (96116268).

128033812 is a wasteful number, since it uses less digits than its factorization.

128033812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990 (or 12988 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 128033812 is about 11315.2026937214. The cubic root of 128033812 is about 504.0127915205.

The spelling of 128033812 in words is "one hundred twenty-eight million, thirty-three thousand, eight hundred twelve".