The number 74550
74550 is a composite number with 48 divisors. Its prime factorisation is 2 × 3 × × 7 × 71. Divisors (48): 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70 … 74550.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 74550: a Harshad number: divisible by its digit sum 21.
- 2
74550 is composite. Its prime factorisation is
- 3
The divisors add up to 214272; without 74550 itself that is 139722, so 74550 is abundant (139722 is more than 74550). Euler's totient φ(74550) = 16800 numbers up to 74550 share no factor with it.
- 4
The digits of 74550 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 169 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74550 = 2 \times 3 \times 5^{2} \times 7 \times 71 \]74550 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 48 |
| Sum of divisors | 214272 |
| Euler totient φ(n) | 16800 |
| Square | 5557702500 |
| Cube | 414326721375000 |
| Square root | 273.038459 (= 5√2982) |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 169 |
| Scientific notation | 7.455 × |
74550 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand five hundred and fifty |
| Binary (base 2) | 10010001100110110 |
| Octal (base 8) | 221466 |
| Hexadecimal (base 16) | 12336 |
| Base 3 | 10210021010 |
| As time | 74550 seconds = 20 h 42 min 30 s |
Is 74550 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74550 ÷ 2 = 37275) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (74550 ÷ 3 = 24850) | 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 | Yes (74550 ÷ 5 = 14910) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (74550 ÷ 6 = 12425) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (74550 ÷ 7 = 10650) | 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 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (74550 ÷ 10 = 7455) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 74550 a prime number?
No. 74550 = 2 × 3 × × 7 × 71, so it is divisible by 2.
What are the factors of 74550?
1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 71, 75, 105, 142, 150, 175, 210, 213, 350, 355, 426, 497, 525, 710, 994, 1050, 1065, 1491, 1775, 2130, 2485, 2982, 3550, 4970, 5325, 7455, 10650, 12425, 14910, 24850, 37275, 74550.
What is 74550 in binary?
10010001100110110 (hexadecimal 12336, octal 221466).
What is the square root of 74550?
About 273.0385, exactly 5√2982.
Is 74550 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 74550?
74550 is a Harshad number: divisible by its digit sum 21.