128808960 has 192 divisors, whose sum is σ = 471744000. Its totient is φ = 29392896.

The previous prime is 128808943. The next prime is 128808989. The reversal of 128808960 is 69808821.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214741 + ... + 215339.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^128808960 is an apocalyptic number.

128808960 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 128808960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235872000).

128808960 is an abundant number, since it is smaller than the sum of its proper divisors (342935040).

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

128808960 is an equidigital number, since it uses as much as digits as its factorization.

128808960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 128808960 is about 11349.4035085550. The cubic root of 128808960 is about 505.0278846152.

The spelling of 128808960 in words is "one hundred twenty-eight million, eight hundred eight thousand, nine hundred sixty".