128808560 has 20 divisors (see below), whose sum is σ = 299480088. Its totient is φ = 51523392.

The previous prime is 128808551. The next prime is 128808569. The reversal of 128808560 is 65808821.

It is an interprime number because it is at equal distance from previous prime (128808551) and next prime (128808569).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128808569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804974 + ... + 805133.

Almost surely, 2^128808560 is an apocalyptic number.

128808560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128808560 is an abundant number, since it is smaller than the sum of its proper divisors (170671528).

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

128808560 is a wasteful number, since it uses less digits than its factorization.

128808560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610120 (or 1610114 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 128808560 is about 11349.3858864698. The cubic root of 128808560 is about 505.0273618478.

The spelling of 128808560 in words is "one hundred twenty-eight million, eight hundred eight thousand, five hundred sixty".