128098836 has 72 divisors (see below), whose sum is σ = 343586880. Its totient is φ = 40127616.

The previous prime is 128098819. The next prime is 128098837. The reversal of 128098836 is 638890821.

It is a junction number, because it is equal to n+sod(n) for n = 128098791 and 128098800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128098837) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 93025 + ... + 94391.

It is an arithmetic number, because the mean of its divisors is an integer number (4772040).

Almost surely, 2^128098836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128098836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171793440).

128098836 is an abundant number, since it is smaller than the sum of its proper divisors (215488044).

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

128098836 is a wasteful number, since it uses less digits than its factorization.

128098836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 128098836 is about 11318.0756314844. The cubic root of 128098836 is about 504.0981007075.

The spelling of 128098836 in words is "one hundred twenty-eight million, ninety-eight thousand, eight hundred thirty-six".