Base | Representation |
---|---|
bin | 1111010001001… |
… | …10100100000000 |
3 | 22221000100112011 |
4 | 13220212210000 |
5 | 230242143344 |
6 | 20413142304 |
7 | 3113461252 |
oct | 750464400 |
9 | 287010464 |
10 | 128084224 |
11 | 66333634 |
12 | 36a8a994 |
13 | 206c77a8 |
14 | 13021cd2 |
15 | b3a0d34 |
hex | 7a26900 |
128084224 has 36 divisors (see below), whose sum is σ = 256440240. Its totient is φ = 63848960.
The previous prime is 128084207. The next prime is 128084227. The reversal of 128084224 is 422480821.
It is not an unprimeable number, because it can be changed into a prime (128084227) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125187 + ... + 126205.
It is an arithmetic number, because the mean of its divisors is an integer number (7123340).
Almost surely, 2128084224 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 128084224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128220120).
128084224 is an abundant number, since it is smaller than the sum of its proper divisors (128356016).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128084224 is an equidigital number, since it uses as much as digits as its factorization.
128084224 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1526 (or 1512 counting only the distinct ones).
The product of its (nonzero) digits is 8192, while the sum is 31.
The square root of 128084224 is about 11317.4300969787. The cubic root of 128084224 is about 504.0789327958.
The spelling of 128084224 in words is "one hundred twenty-eight million, eighty-four thousand, two hundred twenty-four".
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