128547320 has 64 divisors (see below), whose sum is σ = 316707840. Its totient is φ = 46569600.

The previous prime is 128547317. The next prime is 128547337. The reversal of 128547320 is 23745821.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203405 + ... + 204035.

It is an arithmetic number, because the mean of its divisors is an integer number (4948560).

Almost surely, 2^128547320 is an apocalyptic number.

128547320 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 128547320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158353920).

128547320 is an abundant number, since it is smaller than the sum of its proper divisors (188160520).

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

128547320 is a wasteful number, since it uses less digits than its factorization.

128547320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 128547320 is about 11337.8710523625. The cubic root of 128547320 is about 504.6857110519.

The spelling of 128547320 in words is "one hundred twenty-eight million, five hundred forty-seven thousand, three hundred twenty".