The number 84438
84438 is a composite number with 12 divisors. Its prime factorisation is 2 × × 4691. Divisors (12): 1, 2, 3, 6, 9, 18, 4691, 9382, 14073, 28146, 42219, 84438.
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How to work it out
- 1
84438 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
84438 is composite. Its prime factorisation is
- 3
The divisors add up to 182988; without 84438 itself that is 98550, so 84438 is abundant (98550 is more than 84438). Euler's totient φ(84438) = 28140 numbers up to 84438 share no factor with it.
- 4
The digits of 84438 add up to 27, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 81 steps to reach 1.
LaTeX source of the formulas on this page
\[ 84438 = 2 \times 3^{2} \times 4691 \]84438 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 182988 |
| Euler totient φ(n) | 28140 |
| Square | 7129775844 |
| Cube | 602024012715672 |
| Square root | 290.582174 (= 3√9382) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 81 |
| Scientific notation | 8.4438 × |
84438 in other forms
| Form | Value |
|---|---|
| In words | eighty-four thousand four hundred and thirty-eight |
| Binary (base 2) | 10100100111010110 |
| Octal (base 8) | 244726 |
| Hexadecimal (base 16) | 149D6 |
| Base 3 | 11021211100 |
| As time | 84438 seconds = 23 h 27 min 18 s |
Is 84438 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (84438 ÷ 2 = 42219) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (84438 ÷ 3 = 28146) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (84438 ÷ 6 = 14073) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (84438 ÷ 9 = 9382) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 84438 a prime number?
No. 84438 = 2 × × 4691, so it is divisible by 2.
What are the factors of 84438?
1, 2, 3, 6, 9, 18, 4691, 9382, 14073, 28146, 42219, 84438.
What is 84438 in binary?
10100100111010110 (hexadecimal 149D6, octal 244726).
What is the square root of 84438?
About 290.5822, exactly 3√9382.
Is 84438 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 84438?
It is a composite number with 12 divisors.