128008812 has 24 divisors (see below), whose sum is σ = 301590016. Its totient is φ = 42254928.

The previous prime is 128008801. The next prime is 128008843. The reversal of 128008812 is 218800821.

It is a self number, because there is not a number n which added to its sum of digits gives 128008812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50548 + ... + 53019.

Almost surely, 2^128008812 is an apocalyptic number.

128008812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128008812 is an abundant number, since it is smaller than the sum of its proper divisors (173581204).

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

128008812 is a wasteful number, since it uses less digits than its factorization.

128008812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103677 (or 103675 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 128008812 is about 11314.0979313421. The cubic root of 128008812 is about 503.9799847179.

It can be divided in two parts, 12800 and 8812, that added together give a palindrome (21612).

The spelling of 128008812 in words is "one hundred twenty-eight million, eight thousand, eight hundred twelve".