128912802 has 32 divisors (see below), whose sum is σ = 274233600. Its totient is φ = 40259328.

The previous prime is 128912779. The next prime is 128912807. The reversal of 128912802 is 208219821.

It is not an unprimeable number, because it can be changed into a prime (128912807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20599 + ... + 26117.

It is an arithmetic number, because the mean of its divisors is an integer number (8569800).

Almost surely, 2^128912802 is an apocalyptic number.

128912802 is an abundant number, since it is smaller than the sum of its proper divisors (145320798).

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

128912802 is a wasteful number, since it uses less digits than its factorization.

128912802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 128912802 is about 11353.9773647828. The cubic root of 128912802 is about 505.1635610444.

The spelling of 128912802 in words is "one hundred twenty-eight million, nine hundred twelve thousand, eight hundred two".