128098580 has 12 divisors (see below), whose sum is σ = 269007060. Its totient is φ = 51239424.

The previous prime is 128098577. The next prime is 128098601. The reversal of 128098580 is 85890821.

It can be written as a sum of positive squares in 2 ways, for example, as 22543504 + 105555076 = 4748^2 + 10274^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202445 + ... + 3202484.

It is an arithmetic number, because the mean of its divisors is an integer number (22417255).

Almost surely, 2^128098580 is an apocalyptic number.

128098580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128098580 is an abundant number, since it is smaller than the sum of its proper divisors (140908480).

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

128098580 is a wasteful number, since it uses less digits than its factorization.

128098580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404938 (or 6404936 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 128098580 is about 11318.0643221357. The cubic root of 128098580 is about 504.0977649012.

The spelling of 128098580 in words is "one hundred twenty-eight million, ninety-eight thousand, five hundred eighty".