Math question: Find the sum of the digits of the number 638.

To find the sum of the digits of 638, we add the individual digits together. The digit 6 has a value of 6, the digit 3 has a value of 3, and the digit 8 has a value of 8. Adding these together, 6 + 3 + 8 equals 17. So, the sum of the digits of the number 638 is 17. Alternatively, we can also solve it using algebra. Let x represent the number 638. We know that x = 600 + 30 + 8. To find the sum of the digits, we can write it as (x/100) + ((x/10) % 10) + (x % 10). Substituting x with 638, we get (638/100) + ((638/10) % 10) + (638 % 10) = 6 + 3 + 8 = 17. Therefore, the sum of the digits of the number 638 is 17.

Math question: If I multiply the number 638 by its square root and then subtract the cube root of 638, what is the result?

To solve the given question, we first need to calculate the square root and cube root of 638. The square root of 638 is approximately 25.277 and the cube root of 638 is approximately 8.01. Now, multiplying 638 by its square root, we get 16159.126. Finally, subtracting the cube root of 638 from this product, we obtain 16151.116. Hence, the result of multiplying 638 by its square root and subtracting the cube root of 638 is approximately 16151.116.

Math question: If 638 is divided by the sum of its digits, what is the resulting quotient?

To find the sum of the digits, we add 6 + 3 + 8 = 17. Dividing 638 by 17 gives us 37 remainder 5. Therefore, the resulting quotient is 37.

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

638 (number)

638 is an even 3-digits composite number following 637 and preceding 639. In scientific notation, it is written as 6.38 × 10^2. The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors. There are 280 positive integers (up to 638) that are relatively prime to 638.

Interesting facts

638 has 8 divisors, whose sum is 1080
The reverse of 638 is 836
Previous prime number is 11

Basic properties

Is Prime? no
Number parity even
Number length 3
Sum of Digits 17
Digital Root 8

Name

Name	six hundred thirty-eight

Notation

Scientific notation	6.38 × 10^2
Engineering notation	6.38 × 10^0

Prime Factorization of 638

Prime Factorization 2 × 11 × 29

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	638	Product of the distinct prime numbers

The prime factorization of 638 is 2 × 11 × 29. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 4, 77, 57, 130, 377, 5224, 4699, 90054, 49859, 939663, 403801, 2605853, 3908289, 68032875, 5108373, 843053090, 231086543, 297035716, 8859128747

Basic calculations (n = 638)

Multiplication

n×y

n×2	1276
n×3	1914
n×4	2552
n×5	3190

Division

n÷y

n÷2	319
n÷3	212.66666666667
n÷3	159.5
n÷5	127.6

Exponentiation

n^y

n²	407044
n³	259694072
n⁴	165684817936
n⁵	105706913843168

Nth Root

^y√n

²√n	25.25866188063
³√n	8.6087525818061
⁴√n	5.0257996259929
⁵√n	3.6388498508214

Divisors of 638

1, 2, 11, 22, 29, 58, 319, 638

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-637	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638 can be divided by 8 positive divisors. The sum of these divisors (counting 638) is 1, the average is 0.125.

Base conversion 638

Base	System	Value
2	Binary	1001111110
3	Ternary	212122
4	Quaternary	21332
5	Quinary	10023
6	Senary	2542
8	Octal	1176
10	Decimal	638
12	Duodecimal	452
16	Hexadecimal	27e
20	Vigesimal	1bi
36	Base36	hq

Cryptographic Hash Functions

md5	4c27cea8526af8cfee3be5e183ac9605
sha1	afc3bf9d346f20c15bd914465c0beae12e0dba2e
sha256	f4dd301311d96b70a2ee62a6bccfe21bb0d94a89ca2805333cf352c1a2381c13
sha512	5250f58ff4c40c86584850c1859630ce04816f2393014c37febec0ed7eadede2e0901fb01a693c12b62713bc157abbac84e38d4941cff978a56449bc41e4adc9
ripemd-160	e8c9f5a485521a37d62e55fd50d85cea01b356f8

638 as geometric shapes

Circle

Radius = n

Diameter	1276
Circumference	4008.6722259806
Area	1278766.4400878

Sphere

Radius = n

Volume	1087803985.0347
Surface area	5115065.7603512
Circumference	4008.6722259806

Square

Length = n

Perimeter	2552
Area	407044
Diagonal	902.26825279403

Cube

Length = n

Surface area	2442264
Volume	259694072
Space diagonal	1105.0484152289

Equilateral Triangle

Length = n

Perimeter	1914
Area	176255.22222902
Altitude	552.52420761447

Triangular Pyramid

Length = n

Surface area	176255.22222902
Volume	30605239.890858
Height	300.75608426468