128170898 has 16 divisors (see below), whose sum is σ = 194348160. Its totient is φ = 63391776.

The previous prime is 128170897. The next prime is 128170909. The reversal of 128170898 is 898071821.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128170897) 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, 97715 + ... + 99017.

It is an arithmetic number, because the mean of its divisors is an integer number (12146760).

Almost surely, 2^128170898 is an apocalyptic number.

128170898 is a deficient number, since it is larger than the sum of its proper divisors (66177262).

128170898 is a wasteful number, since it uses less digits than its factorization.

128170898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801.

The product of its (nonzero) digits is 64512, while the sum is 44.

The square root of 128170898 is about 11321.2586756067. The cubic root of 128170898 is about 504.1926097830.

The spelling of 128170898 in words is "one hundred twenty-eight million, one hundred seventy thousand, eight hundred ninety-eight".