81307946 (number)

81307946 is an even 8-digits composite number following 81307945 and preceding 81307947. In scientific notation, it is written as 8.1307946 × 10^7. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 40629600 positive integers (up to 81307946) that are relatively prime to 81307946.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred seven thousand nine hundred forty-six

Notation

Scientific notation 8.1307946 × 10^7
Engineering notation 8.1307946 × 10^6

Prime Factorization of 81307946

Prime Factorization 2 × 1801 × 22573

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81307946
Product of the distinct prime numbers

The prime factorization of 81307946 is 2 × 1801 × 22573. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81307946)

Multiplication

n×y
n×2 162615892
n×3 243923838
n×4 325231784
n×5 406539730

Division

n÷y
n÷2 40653973
n÷3 27102648.666667
n÷3 20326986.5
n÷5 16261589.2

Exponentiation

ny
n2 6610982082738916
n3 5.375253741903E+23
n4 4.3705084098295E+31
n5 3.5535706177896E+39

Nth Root

y√n
2√n 9017.0918815325
3√n 433.22249249237
4√n 94.958369202154
5√n 38.196766342284

Divisors of 81307946

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 -81307945
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 81307946 can be divided by 8 positive divisors. The sum of these divisors (counting 81307946) is 1, the average is 0.125.

Base conversion 81307946

Base System Value
2 Binary 100110110001010100100101010
3 Ternary 12122222212112102
4 Quaternary 10312022210222
5 Quinary 131303323241
6 Senary 12022413402
8 Octal 466124452
10 Decimal 81307946
12 Duodecimal 23291262
16 Hexadecimal 4d8a92a
20 Vigesimal 15839h6
36 Base36 1cepm2

Cryptographic Hash Functions

md5 f1c6eb13a6f544afe321a02a649c4f15
sha1 fbef24cf5bdc7ae331cb4a6873f2a74032a8141e
sha256 6d053a267aa6861bf2c1f74e8742a5587d46fc8af58e1006f13434e45f3b0f53
sha512 d18efd7f8d7acd6ecf1301e7dec41c50d1d84dd453998a9bc003a15fa9f905651dcd528a3701784048b0c9cad410ffcb723aebb16d21c806c1502f2668ec0d58
ripemd-160 e0f93a4c8d74680c08ddf870c88d986facf50dd1

81307946 as geometric shapes

Circle

Radius = n
Diameter 162615892
Circumference 510872891.66415
Area 2.0769012744146E+16

Sphere

Radius = n
Volume 2.2515810222325E+24
Surface area 8.3076050976585E+16
Circumference 510872891.66415

Square

Length = n
Perimeter 325231784
Area 6610982082738916
Diagonal 114986799.9619

Cube

Length = n
Surface area 39665892496433496
Volume 5.375253741903E+23
Space diagonal 140829493.53107

Equilateral Triangle

Length = n
Perimeter 243923838
Area 2.8626392138078E+15
Altitude 70414746.765533

Triangular Pyramid

Length = n
Surface area 2.8626392138078E+15
Volume 6.33479728583E+22
Height 38328933.320633