128170752 has 72 divisors (see below), whose sum is σ = 361223856. Its totient is φ = 40206336.

The previous prime is 128170747. The next prime is 128170753. The reversal of 128170752 is 257071821.

It is not an unprimeable number, because it can be changed into a prime (128170753) 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 7 ways as a sum of consecutive naturals, for example, 8148 + ... + 17964.

It is an arithmetic number, because the mean of its divisors is an integer number (5016998).

Almost surely, 2^128170752 is an apocalyptic number.

128170752 is a gapful number since it is divisible by the number (12) 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 128170752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180611928).

128170752 is an abundant number, since it is smaller than the sum of its proper divisors (233053104).

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

128170752 is an equidigital number, since it uses as much as digits as its factorization.

128170752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9853 (or 9839 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 128170752 is about 11321.2522275586. The cubic root of 128170752 is about 504.1924183403.

The spelling of 128170752 in words is "one hundred twenty-eight million, one hundred seventy thousand, seven hundred fifty-two".