128298306 has 16 divisors (see below), whose sum is σ = 259480800. Its totient is φ = 42285408.

The previous prime is 128298281. The next prime is 128298323. The reversal of 128298306 is 603892821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119596 + ... + 120663.

It is an arithmetic number, because the mean of its divisors is an integer number (16217550).

Almost surely, 2^128298306 is an apocalyptic number.

128298306 is an abundant number, since it is smaller than the sum of its proper divisors (131182494).

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

128298306 is a wasteful number, since it uses less digits than its factorization.

128298306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240353.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 128298306 is about 11326.8842141164. The cubic root of 128298306 is about 504.3596183096.

The spelling of 128298306 in words is "one hundred twenty-eight million, two hundred ninety-eight thousand, three hundred six".