Math Question: What is the sum of the prime factors of 138?

To find the prime factors of 138, we begin by dividing 138 by the smallest prime number, 2, resulting in 69. Dividing 69 by 3 gives us 23. Now, we see that 23 is a prime number as well. Thus, the prime factors of 138 are 2, 3, and 23. To find their sum, we add these numbers: 2 + 3 + 23 = 28. Therefore, the sum of the prime factors of 138 is 28.

Math question: The sum of a number and its square is 2766. Find the number.

Let's assume the number is x. According to the given information, we can set up the equation: x + x^2 = 2766. Rearranging the equation, we get x^2 + x - 2766 = 0. Solving this quadratic equation, we find the two possible solutions as x ≈ -53.214 and x ≈ 52.214. Since we cannot have a negative number in this context, the number is approximately 52.214. Thus, the number is 52.214 (approx).

Math question: If I subtract 34 from a number and divide the result by 2, I get 52. What is the number?

To find the number, let's denote it as x. Based on the given information, the equation is (x - 34) / 2 = 52. To solve for x, we can start by multiplying both sides of the equation by 2, yielding x - 34 = 104. Next, we isolate x by adding 34 to both sides, giving us x = 138. Therefore, the number we're looking for is 138.

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

138 (number)

138 is an even 3-digits composite number following 137 and preceding 139. In scientific notation, it is written as 1.38 × 10^2. The sum of its digits is 12. It has a total of 3 prime factors and 8 positive divisors. There are 44 positive integers (up to 138) that are relatively prime to 138.

Interesting facts

138 has 8 divisors, whose sum is 288
The reverse of 138 is 831
Previous prime number is 3

Basic properties

Is Prime? no
Number parity even
Number length 3
Sum of Digits 12
Digital Root 3

Name

Name	one hundred thirty-eight

Notation

Scientific notation	1.38 × 10^2
Engineering notation	1.38 × 10^0

Prime Factorization of 138

Prime Factorization 2 × 3 × 23

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	138	Product of the distinct prime numbers

The prime factorization of 138 is 2 × 3 × 23. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 2, 65, 88, 357, 791, 3625, 989, 14075, 64154, 857198, 306710, 5737147, 1373078, 78031300, 72045739, 731326577, 453705206, 4803506098, 3145742706

Basic calculations (n = 138)

Multiplication

n×y

n×2	276
n×3	414
n×4	552
n×5	690

Division

n÷y

n÷2	69
n÷3	46
n÷3	34.5
n÷5	27.6

Exponentiation

n^y

n²	19044
n³	2628072
n⁴	362673936
n⁵	50049003168

Nth Root

^y√n

²√n	11.747340124471
³√n	5.1676492523636
⁴√n	3.4274392955194
⁵√n	2.6790191454588

Divisors of 138

1, 2, 3, 6, 23, 46, 69, 138

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	-137	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 138 can be divided by 8 positive divisors. The sum of these divisors (counting 138) is 1, the average is 0.125.

Base conversion 138

Base	System	Value
2	Binary	10001010
3	Ternary	12010
4	Quaternary	2022
5	Quinary	1023
6	Senary	350
8	Octal	212
10	Decimal	138
12	Duodecimal	b6
16	Hexadecimal	8a
20	Vigesimal	6i
36	Base36	3u

Cryptographic Hash Functions

md5	013d407166ec4fa56eb1e1f8cbe183b9
sha1	56ad4d4deaec98465c419b4a8ea7bfc1ed38c4d9
sha256	d6a4031733610bb080d0bfa794fcc9dbdcff74834aeaab7c6b927e21e9754037
sha512	3f021d45ac74ef504d609aba7c66cf77435fa502f6baef0d9c63bb97e204cd2a589bf0b82c28939d6b465c0d3fe021917646bbeacb42b8a392cbdb22b0bfc1ac
ripemd-160	d0ce65f4e31d68545e362b0ea9829b445328f40e

138 as geometric shapes

Circle

Radius = n

Diameter	276
Circumference	867.07957239078
Area	59828.490494964

Sphere

Radius = n

Volume	11008442.251073
Surface area	239313.96197986
Circumference	867.07957239078

Square

Length = n

Perimeter	552
Area	19044
Diagonal	195.16147160749

Cube

Length = n

Surface area	114264
Volume	2628072
Space diagonal	239.02301144451

Equilateral Triangle

Length = n

Perimeter	414
Area	8246.2938948354
Altitude	119.51150572225

Triangular Pyramid

Length = n

Surface area	8246.2938948354
Volume	309721.25544108
Height	65.053823869162