128828843 has 16 divisors (see below), whose sum is σ = 152307456. Its totient is φ = 107425440.

The previous prime is 128828831. The next prime is 128828879. The reversal of 128828843 is 348828821.

It is a cyclic number.

It is not a de Polignac number, because 128828843 - 2⁶ = 128828779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128828794 and 128828803.

It is not an unprimeable number, because it can be changed into a prime (128828243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20546 + ... + 26072.

It is an arithmetic number, because the mean of its divisors is an integer number (9519216).

Almost surely, 2^128828843 is an apocalyptic number.

128828843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128828843 is a deficient number, since it is larger than the sum of its proper divisors (23478613).

128828843 is a wasteful number, since it uses less digits than its factorization.

128828843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5714.

The product of its digits is 196608, while the sum is 44.

The square root of 128828843 is about 11350.2794238732. The cubic root of 128828843 is about 505.0538687103.

The spelling of 128828843 in words is "one hundred twenty-eight million, eight hundred twenty-eight thousand, eight hundred forty-three".