Question: If 640 is divided by the sum of the first ten prime numbers minus the square root of 640, multiplied by the cosine of 640 degrees, what is the quotient rounded to the nearest whole number?

To find the quotient, we first calculate the sum of the first ten prime numbers: 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 129. Next, we find the square root of 640, which is approximately 25.298. Now, we calculate the cosine of 640 degrees using a calculator, which gives us an answer of -0.9397. Multiplying -0.9397 by 25.298 gives us -23.781. Finally, we divide 640 by 129 - (-23.781). Simplifying, we have 640 ÷ (129 + 23.781), which equals approximately 4.187. Rounding to the nearest whole number, the quotient is 4.

Math question: If 640 is divided by the sum of its digits, what is the remainder when the quotient is divided by 5?

To begin, we calculate the sum of the digits: 6 + 4 + 0 = 10. Now, dividing 640 by 10 gives us 64. And when we divide 64 by 5, we get a quotient of 12 with a remainder of 4. Therefore, the remainder when 640 divided by the sum of its digits is divided by 5 is 4.

Math Question: Suppose 640 apples are equally distributed among 16 baskets. If each basket contains the same number of apples, how many apples are there in each basket?

To find the number of apples in each basket, we divide the total number of apples (640) by the number of baskets (16). This gives us 40 apples per basket (640 ÷ 16 = 40). Hence, there are 40 apples in each basket.

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

640 (number)

640 is an even 3-digits composite number following 639 and preceding 641. In scientific notation, it is written as 6.40 × 10^2. The sum of its digits is 10. It has a total of 8 prime factors and 16 positive divisors. There are 256 positive integers (up to 640) that are relatively prime to 640.

Interesting facts

640 has 16 divisors, whose sum is 1530
The reverse of 640 is 046
Previous prime number is 2

Basic properties

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

Name

Name	six hundred forty

Notation

Scientific notation	6.40 × 10^2
Engineering notation	6.40 × 10^0

Prime Factorization of 640

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	8	Total number of prime factors
rad	Radical	10	Product of the distinct prime numbers

The prime factorization of 640 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5. Since it has a total of 8 prime factors.

Most popular turbo-numbers

9, 5, 1, 64, 230, 671, 4384, 5237, 29133, 56600, 49563, 205955, 8952774, 5185107, 8773275, 77714153, 525179156, 621367337, 1128166515, 3273480105

Basic calculations (n = 640)

Multiplication

n×y

n×2	1280
n×3	1920
n×4	2560
n×5	3200

Division

n÷y

n÷2	320
n÷3	213.33333333333
n÷3	160
n÷5	128

Exponentiation

n^y

n²	409600
n³	262144000
n⁴	167772160000
n⁵	107374182400000

Nth Root

^y√n

²√n	25.298221281347
³√n	8.6177387601275
⁴√n	5.0297337187317
⁵√n	3.6411284060522

Divisors of 640

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

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	-639	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 640 can be divided by 16 positive divisors. The sum of these divisors (counting 640) is 1, the average is 0.0625.

Base conversion 640

Base	System	Value
2	Binary	1010000000
3	Ternary	212201
4	Quaternary	22000
5	Quinary	10030
6	Senary	2544
8	Octal	1200
10	Decimal	640
12	Duodecimal	454
16	Hexadecimal	280
20	Vigesimal	1c0
36	Base36	hs

Cryptographic Hash Functions

md5	4ffce04d92a4d6cb21c1494cdfcd6dc1
sha1	a52b27e785768645815cc7cb4f28d4278538de42
sha256	3f1bb7c0da3c01e685edd592f3a3ca0b149a399d25b97c0da47118c24a39f59a
sha512	95de8e30728ed3e273edff1c6a9d8aa811742e846095c50d644f7bc50a429574ec784fe64b81fc3a5d6798dae40aaa079919a95d90f33fb39ace6419243b3a29
ripemd-160	cb7823d570bf2211aecafd16e469e5479666479f

640 as geometric shapes

Circle

Radius = n

Diameter	1280
Circumference	4021.2385965949
Area	1286796.3509104

Sphere

Radius = n

Volume	1098066219.4435
Surface area	5147185.4036415
Circumference	4021.2385965949

Square

Length = n

Perimeter	2560
Area	409600
Diagonal	905.09667991878

Cube

Length = n

Surface area	2457600
Volume	262144000
Space diagonal	1108.5125168441

Equilateral Triangle

Length = n

Perimeter	1920
Area	177362.00269505
Altitude	554.25625842204

Triangular Pyramid

Length = n

Surface area	177362.00269505
Volume	30893966.674561
Height	301.69889330626