Base | Representation |
---|---|
bin | 1111010011000… |
… | …01111000000000 |
3 | 22221110200210002 |
4 | 13221201320000 |
5 | 230322432133 |
6 | 20422255132 |
7 | 3115522454 |
oct | 751417000 |
9 | 287420702 |
10 | 128327168 |
11 | 6648a112 |
12 | 36b874a8 |
13 | 20781248 |
14 | 13086664 |
15 | b3ecce8 |
hex | 7a61e00 |
128327168 has 40 divisors (see below), whose sum is σ = 257648688. Its totient is φ = 63852544.
The previous prime is 128327167. The next prime is 128327191. The reversal of 128327168 is 861723821.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128327161) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134180 + ... + 135132.
Almost surely, 2128327168 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 128327168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128824344).
128327168 is an abundant number, since it is smaller than the sum of its proper divisors (129321520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128327168 is an frugal number, since it uses more digits than its factorization.
128327168 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1234 (or 1218 counting only the distinct ones).
The product of its digits is 32256, while the sum is 38.
The square root of 128327168 is about 11328.1581909859. The cubic root of 128327168 is about 504.3974357377.
The spelling of 128327168 in words is "one hundred twenty-eight million, three hundred twenty-seven thousand, one hundred sixty-eight".
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