128329398 has 24 divisors (see below), whose sum is σ = 287017536. Its totient is φ = 41396400.

The previous prime is 128329393. The next prime is 128329403. The reversal of 128329398 is 893923821.

It is an interprime number because it is at equal distance from previous prime (128329393) and next prime (128329403).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128329393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114433 + ... + 115548.

It is an arithmetic number, because the mean of its divisors is an integer number (11959064).

Almost surely, 2^128329398 is an apocalyptic number.

128329398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

128329398 is an abundant number, since it is smaller than the sum of its proper divisors (158688138).

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

128329398 is a wasteful number, since it uses less digits than its factorization.

128329398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230020 (or 230017 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 128329398 is about 11328.2566178561. The cubic root of 128329398 is about 504.4003574359.

The spelling of 128329398 in words is "one hundred twenty-eight million, three hundred twenty-nine thousand, three hundred ninety-eight".