128607500 has 60 divisors (see below), whose sum is σ = 321459600. Its totient is φ = 44088000.

The previous prime is 128607469. The next prime is 128607509. The reversal of 128607500 is 5706821.

It is not an unprimeable number, because it can be changed into a prime (128607509) 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 19 ways as a sum of consecutive naturals, for example, 13826 + ... + 21174.

It is an arithmetic number, because the mean of its divisors is an integer number (5357660).

Almost surely, 2^128607500 is an apocalyptic number.

128607500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128607500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160729800).

128607500 is an abundant number, since it is smaller than the sum of its proper divisors (192852100).

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

128607500 is an equidigital number, since it uses as much as digits as its factorization.

128607500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380 (or 7363 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 128607500 is about 11340.5246792201. The cubic root of 128607500 is about 504.7644557190.

The spelling of 128607500 in words is "one hundred twenty-eight million, six hundred seven thousand, five hundred".