Math Question: If the number 7987 is multiplied by 3, then divided by 7, how many times does it need to be subtracted by 2 to reach zero? (Assuming each operation is performed sequentially)

To find out how many times 7987 needs to be subtracted by 2 after being multiplied by 3 and divided by 7 to reach zero, we can follow these steps. First, we multiply 7987 by 3, resulting in 23961. Then, we divide 23961 by 7, giving us 3423. Lastly, we subtract 3423 by 2 until we reach zero. By performing this operation repeatedly, we can subtract 2 from 3423 a total of 1711 times until it becomes 0. Thus, 7987 needs to be subtracted by 2 for a total of 1711 times to reach zero.

Math question: What is the sum of the digits of the number 7987 multiplied by the quotient when 7987 is divided by the product of its digits?

To find the sum of the digits of 7987, we add the individual digits: 7 + 9 + 8 + 7 = 31. Now, let's calculate the product of the digits: 7 * 9 * 8 * 7 = 3528. Next, we divide 7987 by the product of its digits: 7987 ÷ 3528 = 2.2642 (rounded to four decimal places). Finally, we multiply the sum of the digits (31) by the quotient (2.2642): 31 * 2.2642 = 70.247. Therefore, the answer is 70.247.

What is the sum of the digits in the number 7987, multiplied by the square root of 7987, minus the product of the first and last digit of 7987, divided by the second digit?

The sum of the digits in 7987 is 7+9+8+7 = 31. The square root of 7987 is approximately 89.3788824031. The product of the first and last digit of 7987 is 7*7 = 49. Dividing 49 by the second digit, 9, we get approximately 5.4444444444. Hence, the final answer is 31 * 89.3788824031 - 5.4444444444 = 2801.6096257494.

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

7987 (number)

7987 is an odd 4-digits composite number following 7986 and preceding 7988. In scientific notation, it is written as 7.987 × 10^3. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 6804 positive integers (up to 7987) that are relatively prime to 7987.

Interesting facts

7987 has 4 divisors, whose sum is 8200
The reverse of 7987 is 7897
Previous prime number is 49

Basic properties

Is Prime? no
Number parity odd
Number length 4
Sum of Digits 31
Digital Root 4

Name

Name	seven thousand nine hundred eighty-seven

Notation

Scientific notation	7.987 × 10^3
Engineering notation	7.987 × 10^3

Prime Factorization of 7987

Prime Factorization 49 × 163

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	7987	Product of the distinct prime numbers

The prime factorization of 7987 is 49 × 163. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 5, 17, 29, 842, 809, 2397, 3939, 34623, 91757, 923955, 200081, 7622923, 8411864, 63397481, 13721015, 264904791, 323754543, 3955207015, 2633745689

Basic calculations (n = 7987)

Multiplication

n×y

n×2	15974
n×3	23961
n×4	31948
n×5	39935

Division

n÷y

n÷2	3993.5
n÷3	2662.3333333333
n÷3	1996.75
n÷5	1597.4

Exponentiation

n^y

n²	63792169
n³	509508053803
n⁴	4069440825724561
n⁵	3.2502623875062E+19

Nth Root

^y√n

²√n	89.370017343626
³√n	19.989160793308
⁴√n	9.4535716712587
⁵√n	6.0322139532718

Divisors of 7987

1, 49, 163, 7987

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-7986	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 7987 can be divided by 4 positive divisors. The sum of these divisors (counting 7987) is 1, the average is 0.25.

Base conversion 7987

Base	System	Value
2	Binary	1111100110011
3	Ternary	101221211
4	Quaternary	1330303
5	Quinary	223422
6	Senary	100551
8	Octal	17463
10	Decimal	7987
12	Duodecimal	4757
16	Hexadecimal	1f33
20	Vigesimal	jj7
36	Base36	65v

Cryptographic Hash Functions

md5	e9287a53b94620249766921107fe70a3
sha1	7e4aa2855dbbb82cf6b617743af48640f2c1ba89
sha256	957d3341036a10da9190632c2d79d2894866d33ceb6b60e00928b8cd8cb8b5c9
sha512	5f8673dd1bfce76b3f0afbce1ba144c04a909a3eafdef2d270fa5be756ebc1edc68f2f5966911e2440aa5b9f4f900879c8f0032c30aac00d9ff00b759bbcb643
ripemd-160	333321a7a7d5ad86b642d9254e50291e25021033

7987 as geometric shapes

Circle

Radius = n

Diameter	15974
Circumference	50183.801048443
Area	200409009.48696

Sphere

Radius = n

Volume	2134222345029.8
Surface area	801636037.94783
Circumference	50183.801048443

Square

Length = n

Perimeter	31948
Area	63792169
Diagonal	11295.323722674

Cube

Length = n

Surface area	382753014
Volume	509508053803
Space diagonal	13833.889800053

Equilateral Triangle

Length = n

Perimeter	23961
Area	27622819.458255
Altitude	6916.9449000263

Triangular Pyramid

Length = n

Surface area	27622819.458255
Volume	60046099985.544
Height	3765.107907558