128466828 has 108 divisors (see below), whose sum is σ = 397739160. Its totient is φ = 34763904.

The previous prime is 128466803. The next prime is 128466829. The reversal of 128466828 is 828664821.

It is not an unprimeable number, because it can be changed into a prime (128466829) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31600 + ... + 35432.

It is an arithmetic number, because the mean of its divisors is an integer number (3682770).

Almost surely, 2^128466828 is an apocalyptic number.

128466828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128466828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198869580).

128466828 is an abundant number, since it is smaller than the sum of its proper divisors (269272332).

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

128466828 is a wasteful number, since it uses less digits than its factorization.

128466828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876 (or 3864 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 128466828 is about 11334.3208001185. The cubic root of 128466828 is about 504.5803499959.

The spelling of 128466828 in words is "one hundred twenty-eight million, four hundred sixty-six thousand, eight hundred twenty-eight".