128800811 has 8 divisors (see below), whose sum is σ = 133878864. Its totient is φ = 123806880.

The previous prime is 128800783. The next prime is 128800813. The reversal of 128800811 is 118008821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128800811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128800813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17900 + ... + 24041.

It is an arithmetic number, because the mean of its divisors is an integer number (16734858).

Almost surely, 2^128800811 is an apocalyptic number.

128800811 is a deficient number, since it is larger than the sum of its proper divisors (5078053).

128800811 is an equidigital number, since it uses as much as digits as its factorization.

128800811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42061.

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 128800811 is about 11349.0444972253. The cubic root of 128800811 is about 505.0172343234.

The spelling of 128800811 in words is "one hundred twenty-eight million, eight hundred thousand, eight hundred eleven".