128598730 has 32 divisors (see below), whose sum is σ = 250387200. Its totient is φ = 47272512.

The previous prime is 128598719. The next prime is 128598733. The reversal of 128598730 is 37895821.

It is a super-2 number, since 2×128598730² = 33075266715225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128598733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29001 + ... + 33139.

It is an arithmetic number, because the mean of its divisors is an integer number (7824600).

Almost surely, 2^128598730 is an apocalyptic number.

128598730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128598730 is a deficient number, since it is larger than the sum of its proper divisors (121788470).

128598730 is a wasteful number, since it uses less digits than its factorization.

128598730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 128598730 is about 11340.1380062149. The cubic root of 128598730 is about 504.7529818290.

The spelling of 128598730 in words is "one hundred twenty-eight million, five hundred ninety-eight thousand, seven hundred thirty".