The number 1490
1490 is a composite number with 8 divisors. Its prime factorisation is 2 × 5 × 149. Divisors (8): 1, 2, 5, 10, 149, 298, 745, 1490.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
1490 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
1490 is composite. Its prime factorisation is
- 3
The divisors add up to 2700; without 1490 itself that is 1210, so 1490 is deficient (1210 is less than 1490). Euler's totient φ(1490) = 592 numbers up to 1490 share no factor with it.
- 4
The digits of 1490 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 91 steps to reach 1.
LaTeX source of the formulas on this page
\[ 1490 = 2 \times 5 \times 149 \]
1490 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 2700 |
| Euler totient φ(n) | 592 |
| Square | 2220100 |
| Cube | 3307949000 |
| Square root | 38.600518 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 91 |
| Scientific notation | 1.49 × |
1490 in other forms
| Form | Value |
|---|---|
| In words | one thousand four hundred and ninety |
| Roman numerals | MCDXC |
| Binary (base 2) | 10111010010 |
| Octal (base 8) | 2722 |
| Hexadecimal (base 16) | 5D2 |
| Base 3 | 2001012 |
| As time | 1490 seconds = 24 min 50 s |
Is 1490 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (1490 ÷ 2 = 745) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 (1490 ÷ 5 = 298) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (1490 ÷ 10 = 149) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 1490 a prime number?
No. 1490 = 2 × 5 × 149, so it is divisible by 2.
What are the factors of 1490?
1, 2, 5, 10, 149, 298, 745, 1490.
What is 1490 in binary?
10111010010 (hexadecimal 5D2, octal 2722).
What is the square root of 1490?
About 38.6005.
What is 1490 in Roman numerals?
MCDXC.
Is 1490 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 1490?
It is a composite number with 8 divisors.