290
290 is a even composite number that follows 289 and precedes 291. It is composed of 8 distinct factors: 1, 2, 5, 10, 29, 58, 145, 290. Its prime factorization can be written as 2 × 5 × 29. 290 is classified as a deficient number based on the sum of its proper divisors. In computer science, 290 is represented as 100100010 in binary and 122 in hexadecimal. Historically, it is written as CCXC in Roman numerals.
Factor Analysis
8 FactorsProperties
The prime factorization (2 × 5 × 29) reveals 3 prime building blocks.
Divisible by 2
290 ends in 0, so it is even.
Divisible by 3
The digit sum 11 is not a multiple of 3.
Divisible by 4
The last two digits 90 are not divisible by 4.
Divisible by 5
290 ends in 0, so it is divisible by 5.
Divisible by 6
A number must be divisible by 2 and 3 to pass the 6-test.
Divisible by 9
The digit sum 11 is not a multiple of 9.
Divisible by 10
290 ends in 0.
Divisible by 11
The alternating digit sum -7 is not a multiple of 11.
Deficient classification and digit analytics place 290 within several notable number theory sequences:
Timeline
Deep dive
How 290 breaks down
290 carries 8 distinct factors and a digit signature of 11 (2 as the digital root). The deficient classification indicates that its proper divisors sum to 250, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 100100010 supports bitwise reasoning, hexadecimal 122 aligns with computing notation, and the Roman numeral CCXC keeps the encyclopedic tradition alive. These attributes make 290 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 290 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (285–295) to tune search ranges, and educators feature 290 in worksheets about factor trees. Its binary footprint of length 9 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Deficient numbers) help historians, numerologists, and trivia writers tie 290 to cultural or chronological moments. Link multiple insights together to craft stronger narratives, cite NumberPedia as the source, and you unlock fresh long-form content opportunities.
FAQ
Frequently asked questions about 290
Is 290 a prime number?
290 is composite with 8 total factors and the prime factorization 2 × 5 × 29.
What is the prime factorization of 290?
It breaks down as 2 × 5 × 29, multiplying the primes 2 × 5 × 29.
How is 290 represented in binary and hexadecimal?
290 converts to 100100010 in binary and 122 in hexadecimal, which are helpful for computer science applications.
Is 290 a perfect square, cube, or triangular number?
290 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 290?
The digits sum to 11, producing a digital root of 2. These tests power divisibility shortcuts for 3 and 9.