3920
3920 is a even composite number that follows 3919 and precedes 3921. It is composed of 30 distinct factors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920. Its prime factorization can be written as 2^4 × 5 × 7^2. 3920 is classified as a abundant number based on the sum of its proper divisors. In computer science, 3920 is represented as 111101010000 in binary and F50 in hexadecimal. Historically, it is written as MMMCMXX in Roman numerals.
Factor Analysis
30 FactorsProperties
The prime factorization (2^4 × 5 × 7^2) reveals 7 prime building blocks.
Divisible by 2
3920 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
3920 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
3920 ends in 0.
Divisible by 11
The alternating digit sum -4 is not a multiple of 11.
Abundant classification and digit analytics place 3920 within several notable number theory sequences:
Timeline
Deep dive
How 3920 breaks down
3920 carries 30 distinct factors and a digit signature of 14 (5 as the digital root). The abundant classification indicates that its proper divisors sum to 6682, which exceeds the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 111101010000 supports bitwise reasoning, hexadecimal F50 aligns with computing notation, and the Roman numeral MMMCMXX keeps the encyclopedic tradition alive. These attributes make 3920 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 3920 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (3915–3925) to tune search ranges, and educators feature 3920 in worksheets about factor trees. Its binary footprint of length 12 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 3920 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 3920
Is 3920 a prime number?
3920 is composite with 30 total factors and the prime factorization 2^4 × 5 × 7^2.
What is the prime factorization of 3920?
It breaks down as 2^4 × 5 × 7^2, multiplying the primes 2 × 2 × 2 × 2 × 5 × 7 × 7.
How is 3920 represented in binary and hexadecimal?
3920 converts to 111101010000 in binary and F50 in hexadecimal, which are helpful for computer science applications.
Is 3920 a perfect square, cube, or triangular number?
3920 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 3920?
The digits sum to 14, producing a digital root of 5. These tests power divisibility shortcuts for 3 and 9.