128816800 has 72 divisors (see below), whose sum is σ = 359414496. Its totient is φ = 44163840.

The previous prime is 128816693. The next prime is 128816843. The reversal of 128816800 is 8618821.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5902 + ... + 17101.

It is an arithmetic number, because the mean of its divisors is an integer number (4991868).

Almost surely, 2^128816800 is an apocalyptic number.

128816800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128816800 is an abundant number, since it is smaller than the sum of its proper divisors (230597696).

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

128816800 is a wasteful number, since it uses less digits than its factorization.

128816800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23030 (or 23017 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 128816800 is about 11349.7488959007. The cubic root of 128816800 is about 505.0381306371.

The spelling of 128816800 in words is "one hundred twenty-eight million, eight hundred sixteen thousand, eight hundred".