128768875 has 16 divisors (see below), whose sum is σ = 164447712. Its totient is φ = 100615200.

The previous prime is 128768873. The next prime is 128768879. The reversal of 128768875 is 578867821.

It is a happy number.

It is not a de Polignac number, because 128768875 - 2¹ = 128768873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128768873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6604 + ... + 17353.

It is an arithmetic number, because the mean of its divisors is an integer number (10277982).

Almost surely, 2^128768875 is an apocalyptic number.

128768875 is a deficient number, since it is larger than the sum of its proper divisors (35678837).

128768875 is an equidigital number, since it uses as much as digits as its factorization.

128768875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24015 (or 24005 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 52.

The square root of 128768875 is about 11347.6374193045. The cubic root of 128768875 is about 504.9754914093.

The spelling of 128768875 in words is "one hundred twenty-eight million, seven hundred sixty-eight thousand, eight hundred seventy-five".