The number 74470
74470 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 11 × 677. Divisors (16): 1, 2, 5, 10, 11, 22, 55, 110, 677, 1354, 3385, 6770, 7447, 14894, 37235, 74470.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 74470: a happy number: repeatedly adding the squares of its digits reaches 1; a Harshad number: divisible by its digit sum 22.
- 2
74470 is composite. Its prime factorisation is
- 3
The divisors add up to 146448; without 74470 itself that is 71978, so 74470 is deficient (71978 is less than 74470). Euler's totient φ(74470) = 27040 numbers up to 74470 share no factor with it.
- 4
The digits of 74470 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74470 = 2 \times 5 \times 11 \times 677 \]
74470 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 146448 |
| Euler totient φ(n) | 27040 |
| Square | 5545780900 |
| Cube | 412994303623000 |
| Square root | 272.891920 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 94 |
| Scientific notation | 7.447 × |
74470 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand four hundred and seventy |
| Binary (base 2) | 10010001011100110 |
| Octal (base 8) | 221346 |
| Hexadecimal (base 16) | 122E6 |
| Base 3 | 10210011011 |
| As time | 74470 seconds = 20 h 41 min 10 s |
Is 74470 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74470 ÷ 2 = 37235) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | 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 (74470 ÷ 5 = 14894) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | 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 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (74470 ÷ 10 = 7447) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (74470 ÷ 11 = 6770) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 74470 a prime number?
No. 74470 = 2 × 5 × 11 × 677, so it is divisible by 2.
What are the factors of 74470?
1, 2, 5, 10, 11, 22, 55, 110, 677, 1354, 3385, 6770, 7447, 14894, 37235, 74470.
What is 74470 in binary?
10010001011100110 (hexadecimal 122E6, octal 221346).
What is the square root of 74470?
About 272.8919.
Is 74470 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 74470?
74470 is a happy number: repeatedly adding the squares of its digits reaches 1; a Harshad number: divisible by its digit sum 22.