128107880 has 64 divisors (see below), whose sum is σ = 308664000. Its totient is φ = 47706624.

The previous prime is 128107873. The next prime is 128107883. The reversal of 128107880 is 88701821.

It is a self number, because there is not a number n which added to its sum of digits gives 128107880.

It is not an unprimeable number, because it can be changed into a prime (128107883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43412 + ... + 46268.

It is an arithmetic number, because the mean of its divisors is an integer number (4822875).

Almost surely, 2^128107880 is an apocalyptic number.

128107880 is a gapful number since it is divisible by the number (10) 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 128107880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154332000).

128107880 is an abundant number, since it is smaller than the sum of its proper divisors (180556120).

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

128107880 is a wasteful number, since it uses less digits than its factorization.

128107880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 128107880 is about 11318.4751623176. The cubic root of 128107880 is about 504.1099638284.

The spelling of 128107880 in words is "one hundred twenty-eight million, one hundred seven thousand, eight hundred eighty".