8420
8420 is a even composite number that follows 8419 and precedes 8421. It is composed of 12 distinct factors: 1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420. Its prime factorization can be written as 2^2 × 5 × 421. 8420 is classified as a abundant number based on the sum of its proper divisors. In computer science, 8420 is represented as 10000011100100 in binary and 20E4 in hexadecimal.
Factor Analysis
12 FactorsProperties
The prime factorization (2^2 × 5 × 421) reveals 4 prime building blocks.
Divisible by 2
8420 ends in 0, so it is even.
Divisible by 3
The digit sum 14 is not a multiple of 3.
Divisible by 4
The last two digits 20 form a multiple of 4.
Divisible by 5
8420 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 14 is not a multiple of 9.
Divisible by 10
8420 ends in 0.
Divisible by 11
The alternating digit sum 6 is not a multiple of 11.
Abundant classification and digit analytics place 8420 within several notable number theory sequences:
Timeline
Deep dive
How 8420 breaks down
8420 carries 12 distinct factors and a digit signature of 14 (5 as the digital root). The abundant classification indicates that its proper divisors sum to 9304, which exceeds the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 10000011100100 supports bitwise reasoning, hexadecimal 20E4 aligns with computing notation, and the Roman numeral N/A (1-3999) keeps the encyclopedic tradition alive. These attributes make 8420 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 8420 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (8415–8425) to tune search ranges, and educators feature 8420 in worksheets about factor trees. Its binary footprint of length 14 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Abundant numbers) help historians, numerologists, and trivia writers tie 8420 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 8420
Is 8420 a prime number?
8420 is composite with 12 total factors and the prime factorization 2^2 × 5 × 421.
What is the prime factorization of 8420?
It breaks down as 2^2 × 5 × 421, multiplying the primes 2 × 2 × 5 × 421.
How is 8420 represented in binary and hexadecimal?
8420 converts to 10000011100100 in binary and 20E4 in hexadecimal, which are helpful for computer science applications.
Is 8420 a perfect square, cube, or triangular number?
8420 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 8420?
The digits sum to 14, producing a digital root of 5. These tests power divisibility shortcuts for 3 and 9.