128802560 has 72 divisors (see below), whose sum is σ = 315233856. Its totient is φ = 50401280.

The previous prime is 128802533. The next prime is 128802571. The reversal of 128802560 is 65208821.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59090 + ... + 61230.

It is an arithmetic number, because the mean of its divisors is an integer number (4378248).

Almost surely, 2^128802560 is an apocalyptic number.

128802560 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 128802560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157616928).

128802560 is an abundant number, since it is smaller than the sum of its proper divisors (186431296).

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

128802560 is an equidigital number, since it uses as much as digits as its factorization.

128802560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 128802560 is about 11349.1215519088. The cubic root of 128802560 is about 505.0195202075.

The spelling of 128802560 in words is "one hundred twenty-eight million, eight hundred two thousand, five hundred sixty".