81271640 (number)

81271640 is an even 8-digits composite number following 81271639 and preceding 81271641. In scientific notation, it is written as 8.1271640 × 10^7. The sum of its digits is 29. It has a total of 5 prime factors and 16 positive divisors. There are 32508640 positive integers (up to 81271640) that are relatively prime to 81271640.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred seventy-one thousand six hundred forty

Notation

Scientific notation 8.1271640 × 10^7
Engineering notation 8.1271640 × 10^6

Prime Factorization of 81271640

Prime Factorization 2 × 2 × 2 × 5 × 2031791

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20317910
Product of the distinct prime numbers

The prime factorization of 81271640 is 2 × 2 × 2 × 5 × 2031791. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 5, 37, 64, 719, 128, 6036, 2557, 9618, 8165, 317305, 169805, 8585673, 5913032, 43231144, 10456038, 909994341, 362144215, 9023907012, 9573742397

Basic calculations (n = 81271640)

Multiplication

n×y
n×2 162543280
n×3 243814920
n×4 325086560
n×5 406358200

Division

n÷y
n÷2 40635820
n÷3 27090546.666667
n÷3 20317910
n÷5 16254328

Exponentiation

ny
n2 6605079468289600
n3 5.3680564071822E+23
n4 4.3627074782421E+31
n5 3.54564391597E+39

Nth Root

y√n
2√n 9015.078479969
3√n 433.15800138897
4√n 94.947767114182
5√n 38.193354573509

Divisors of 81271640

1, 2, 4, 5, 8, 10, 20, 40, 2031791, 4063582, 8127164, 10158955, 16254328, 20317910, 40635820, 81271640

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 -81271639
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 81271640 can be divided by 16 positive divisors. The sum of these divisors (counting 81271640) is 1, the average is 0.0625.

Base conversion 81271640

Base System Value
2 Binary 100110110000001101101011000
3 Ternary 12122221000201202
4 Quaternary 10312001231120
5 Quinary 131301143030
6 Senary 12021533332
8 Octal 466015530
10 Decimal 81271640
12 Duodecimal 23274248
16 Hexadecimal 4d81b58
20 Vigesimal 157ij20
36 Base36 1cdxlk

Cryptographic Hash Functions

md5 d5bb56fd5555ab295de6c6542ba4e093
sha1 24dd4b0ccc28621e05935b2df6b7c944b9498234
sha256 2bca57084dd528d635935f4fcbf191d18347c4d0ad54538599de72d14239cfc3
sha512 0afa9c68508f34d9772101a613130b8db7823652df93d122288526b502087db30ad7408528fe1273a96cbccb1799b92e8082909ea3bb11ccf8a5c2d03918a49f
ripemd-160 93d0b6d2834f0f617a8c09c536b00ad9738f4773

81271640 as geometric shapes

Circle

Radius = n
Diameter 162543280
Circumference 510644774.33839
Area 2.0750469133955E+16

Sphere

Radius = n
Volume 2.2485662097146E+24
Surface area 8.3001876535822E+16
Circumference 510644774.33839

Square

Length = n
Perimeter 325086560
Area 6605079468289600
Diagonal 114935455.5243

Cube

Length = n
Surface area 39630476809737600
Volume 5.3680564071822E+23
Space diagonal 140766609.69445

Equilateral Triangle

Length = n
Perimeter 243814920
Area 2.8600833067769E+15
Altitude 70383304.847224

Triangular Pyramid

Length = n
Surface area 2.8600833067769E+15
Volume 6.3263151455174E+22
Height 38311818.508101