128305882 has 16 divisors (see below), whose sum is σ = 195410880. Its totient is φ = 63174112.

The previous prime is 128305867. The next prime is 128305883. The reversal of 128305882 is 288503821.

It is not an unprimeable number, because it can be changed into a prime (128305883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58518 + ... + 60670.

It is an arithmetic number, because the mean of its divisors is an integer number (12213180).

Almost surely, 2^128305882 is an apocalyptic number.

128305882 is a deficient number, since it is larger than the sum of its proper divisors (67104998).

128305882 is a wasteful number, since it uses less digits than its factorization.

128305882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 128305882 is about 11327.2186347753. The cubic root of 128305882 is about 504.3695455731.

The spelling of 128305882 in words is "one hundred twenty-eight million, three hundred five thousand, eight hundred eighty-two".