12905 (number)

12905 is an odd 5-digits composite number following 12904 and preceding 12906. In scientific notation, it is written as 1.2905 × 10^4. The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors. There are 9856 positive integers (up to 12905) that are relatively prime to 12905.

Interesting facts

Basic properties

Name

Name twelve thousand nine hundred five

Notation

Scientific notation 1.2905 × 10^4
Engineering notation 1.2905 × 10^3

Prime Factorization of 12905

Prime Factorization 5 × 29 × 89

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 12905
Product of the distinct prime numbers

The prime factorization of 12905 is 5 × 29 × 89. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 5, 39, 17, 661, 816, 3584, 2105, 18593, 27029, 969027, 989253, 5403480, 7364438, 38593949, 44169500, 506563165, 492000529, 7115596143, 462716020

Basic calculations (n = 12905)

Multiplication

n×y
n×2 25810
n×3 38715
n×4 51620
n×5 64525

Division

n÷y
n÷2 6452.5
n÷3 4301.6666666667
n÷3 3226.25
n÷5 2581

Exponentiation

ny
n2 166539025
n3 2149186117625
n4 27735246847950625
n5 3.579233605728E+20

Nth Root

y√n
2√n 113.6001760562
3√n 23.455930687935
4√n 10.658338334666
5√n 6.6397480761554

Divisors of 12905

1, 5, 29, 89, 145, 445, 2581, 12905

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 -12904
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 12905 can be divided by 8 positive divisors. The sum of these divisors (counting 12905) is 1, the average is 0.125.

Base conversion 12905

Base System Value
2 Binary 11001001101001
3 Ternary 122200222
4 Quaternary 3021221
5 Quinary 403110
6 Senary 135425
8 Octal 31151
10 Decimal 12905
12 Duodecimal 7575
16 Hexadecimal 3269
20 Vigesimal 1c55
36 Base36 9yh

Cryptographic Hash Functions

md5 0d3350e2519bca2aa09823ebbfd3d5ed
sha1 6530dfc787326a1abc2e0abb463eb98510afd083
sha256 cc54f09bfc8ff1e4d68b928d19e6c0e6672d1e479cce7681728e5f6a522fbae9
sha512 edf7bfc4dc915283a34b59f8861680914cdab98ec5d4b9aa13da3a01278d516fa109e901c30e3034bb9cc259f9c07fc7fd7c62528a65aca0a301f2fc12113e47
ripemd-160 8dc0a330fddedcee2eb5e63b9e99f6a07e0daa98

12905 as geometric shapes

Circle

Radius = n
Diameter 25810
Circumference 81084.506389153
Area 523197777.47601

Sphere

Radius = n
Volume 9002489757770.5
Surface area 2092791109.904
Circumference 81084.506389153

Square

Length = n
Perimeter 51620
Area 166539025
Diagonal 18250.426022425

Cube

Length = n
Surface area 999234150
Volume 2149186117625
Space diagonal 22352.115671676

Equilateral Triangle

Length = n
Perimeter 38715
Area 72113513.185746
Altitude 11176.057835838

Triangular Pyramid

Length = n
Surface area 72113513.185746
Volume 253284012967.44
Height 6083.4753408083