128530698 has 16 divisors (see below), whose sum is σ = 263040096. Its totient is φ = 41847120.

The previous prime is 128530679. The next prime is 128530751. The reversal of 128530698 is 896035821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248833 + ... + 249348.

It is an arithmetic number, because the mean of its divisors is an integer number (16440006).

Almost surely, 2^128530698 is an apocalyptic number.

128530698 is an abundant number, since it is smaller than the sum of its proper divisors (134509398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128530698 is a wasteful number, since it uses less digits than its factorization.

128530698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498229.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 128530698 is about 11337.1379986309. The cubic root of 128530698 is about 504.6639570719.

The spelling of 128530698 in words is "one hundred twenty-eight million, five hundred thirty thousand, six hundred ninety-eight".