128716800 has 156 divisors (see below), whose sum is σ = 426587280. Its totient is φ = 34242560.

The previous prime is 128716793. The next prime is 128716817. The reversal of 128716800 is 8617821.

It is a happy number.

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, 306991 + ... + 307409.

Almost surely, 2^128716800 is an apocalyptic number.

128716800 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 128716800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213293640).

128716800 is an abundant number, since it is smaller than the sum of its proper divisors (297870480).

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

128716800 is an equidigital number, since it uses as much as digits as its factorization.

128716800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 128716800 is about 11345.3426567909. The cubic root of 128716800 is about 504.9074104015.

The spelling of 128716800 in words is "one hundred twenty-eight million, seven hundred sixteen thousand, eight hundred".