128844113 has 8 divisors (see below), whose sum is σ = 131739048. Its totient is φ = 125966464.

The previous prime is 128844109. The next prime is 128844127. The reversal of 128844113 is 311448821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 105534529 + 23309584 = 10273^2 + 4828^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 128844113 - 2² = 128844109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128844113.

It is not an unprimeable number, because it can be changed into a prime (128844713) 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, 11381 + ... + 19677.

It is an arithmetic number, because the mean of its divisors is an integer number (16467381).

Almost surely, 2^128844113 is an apocalyptic number.

It is an amenable number.

128844113 is a deficient number, since it is larger than the sum of its proper divisors (2894935).

128844113 is an equidigital number, since it uses as much as digits as its factorization.

128844113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8643.

The product of its digits is 6144, while the sum is 32.

The square root of 128844113 is about 11350.9520746059. The cubic root of 128844113 is about 505.0738224922.

The spelling of 128844113 in words is "one hundred twenty-eight million, eight hundred forty-four thousand, one hundred thirteen".