Math question: What is the sum of the three consecutive numbers starting from 280?

To find the sum of three consecutive numbers, we can use the formula n + (n+1) + (n+2), where n is the first number. Plugging in 280, we get 280 + (280+1) + (280+2) = 280 + 281 + 282 = 843. Therefore, the sum of the three consecutive numbers starting from 280 is 843.

What is the square root of 280 rounded to the nearest whole number, multiplied by the difference between 280 and the sum of the first six prime numbers?

The square root of 280 is approximately 16.73, rounded to the nearest whole number we get 17. The sum of the first six prime numbers (2+3+5+7+11+13) is 41. Thus, 280 minus 41 equals 239. Finally, multiplying 17 by 239, we get the answer: 4,063.

Math Question: If 280 is divided by the product of 4 times a mystery number and added to 120, the result is twice the number itself. What is the mystery number?

Let the mystery number be 'x'. According to the problem, (280/(4*x)) + 120 = 2x. To solve this equation, let's simplify it. By subtracting 120 from both sides, we get 280/(4*x) = 2x - 120. Multiply both sides by 4x to eliminate the denominator. We then have 280 = 8x^2 - 480x. Rearranging the terms, 8x^2 - 480x - 280 = 0. By solving this quadratic equation, we find two possible values for x, which are either positive or negative.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

280 (number)

280 is an even 3-digits composite number following 279 and preceding 281. In scientific notation, it is written as 2.80 × 10^2. The sum of its digits is 10. It has a total of 5 prime factors and 16 positive divisors. There are 96 positive integers (up to 280) that are relatively prime to 280.

Interesting facts

280 has 16 divisors, whose sum is 720
The reverse of 280 is 082
Previous prime number is 5

Basic properties

Is Prime? no
Number parity even
Number length 3
Sum of Digits 10
Digital Root 1

Name

Name	two hundred eighty

Notation

Scientific notation	2.80 × 10^2
Engineering notation	2.80 × 10^0

Prime Factorization of 280

Prime Factorization 2 × 2 × 2 × 5 × 7

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	70	Product of the distinct prime numbers

The prime factorization of 280 is 2 × 2 × 2 × 5 × 7. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 7, 80, 80, 377, 35, 6688, 667, 10994, 93229, 546114, 605694, 3132859, 2300390, 62674727, 89110485, 778814340, 85071401, 1464603430, 1918670995

Basic calculations (n = 280)

Multiplication

n×y

n×2	560
n×3	840
n×4	1120
n×5	1400

Division

n÷y

n÷2	140
n÷3	93.333333333333
n÷3	70
n÷5	56

Exponentiation

n^y

n²	78400
n³	21952000
n⁴	6146560000
n⁵	1721036800000

Nth Root

^y√n

²√n	16.733200530682
³√n	6.5421326203772
⁴√n	4.090623489235
⁵√n	3.0862535768319

Divisors of 280

1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-279	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 280 can be divided by 16 positive divisors. The sum of these divisors (counting 280) is 1, the average is 0.0625.

Base conversion 280

Base	System	Value
2	Binary	100011000
3	Ternary	101101
4	Quaternary	10120
5	Quinary	2110
6	Senary	1144
8	Octal	430
10	Decimal	280
12	Duodecimal	1b4
16	Hexadecimal	118
20	Vigesimal	e0
36	Base36	7s

Cryptographic Hash Functions

md5	92c8c96e4c37100777c7190b76d28233
sha1	ba613d1fc0d9300175611e31cca7cf9f525056cb
sha256	7f0a22117f8fe0172cf9209ff622b64a51aaeda21d58b5b62685a93dbe2dad25
sha512	7aaf374a021f6cd5fda151e5c729a6d0da8096fcfb23f2028e0ba1aec5e1d7dec7acdccb7f37388d57e1cf5644cc3e32c917d7577c7017c846f88a2963aca59f
ripemd-160	05d0e6a946b47d88f10d86fb9d17f65e9a1fe3ce

280 as geometric shapes

Circle

Radius = n

Diameter	560
Circumference	1759.2918860103
Area	246300.86404144

Sphere

Radius = n

Volume	91952322.575471
Surface area	985203.45616576
Circumference	1759.2918860103

Square

Length = n

Perimeter	1120
Area	78400
Diagonal	395.97979746447

Cube

Length = n

Surface area	470400
Volume	21952000
Space diagonal	484.97422611929

Equilateral Triangle

Length = n

Perimeter	840
Area	33948.19582835
Altitude	242.48711305964

Triangular Pyramid

Length = n

Surface area	33948.19582835
Volume	2587068.0101012
Height	131.99326582149