128280840298 has 16 divisors (see below), whose sum is σ = 207231199560. Its totient is φ = 59204169216.

The previous prime is 128280840293. The next prime is 128280840299. The reversal of 128280840298 is 892048082821.

It can be written as a sum of positive squares in 4 ways, for example, as 88139515689 + 40141324609 = 296883^2 + 200353^2 .

It is not an unprimeable number, because it can be changed into a prime (128280840293) 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, 677518 + ... + 845926.

Almost surely, 2^128280840298 is an apocalyptic number.

128280840298 is a deficient number, since it is larger than the sum of its proper divisors (78950359262).

128280840298 is a wasteful number, since it uses less digits than its factorization.

128280840298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197721.

The product of its (nonzero) digits is 1179648, while the sum is 52.

The spelling of 128280840298 in words is "one hundred twenty-eight billion, two hundred eighty million, eight hundred forty thousand, two hundred ninety-eight".