81282240 (number)

81282240 is an even 8-digits composite number following 81282239 and preceding 81282241. In scientific notation, it is written as 8.1282240 × 10^7. The sum of its digits is 27. It has a total of 11 prime factors and 168 positive divisors. There are 19888128 positive integers (up to 81282240) that are relatively prime to 81282240.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1282240 × 10^7
Engineering notation 8.1282240 × 10^6

Prime Factorization of 81282240

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 15 × 3 × 13 × 13 × 167

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 11
Total number of prime factors
rad Radical 195390
Product of the distinct prime numbers

The prime factorization of 81282240 is 2 × 2 × 2 × 2 × 2 × 2 × 15 × 3 × 13 × 13 × 167. Since it has a total of 11 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81282240)

Multiplication

n×y
n×2 162564480
n×3 243846720
n×4 325128960
n×5 406411200

Division

n÷y
n÷2 40641120
n÷3 27094080
n÷3 20320560
n÷5 16256448

Exponentiation

ny
n2 6606802539417600
n3 5.3701570964155E+23
n4 4.3649839794855E+31
n5 3.5479567541669E+39

Nth Root

y√n
2√n 9015.6663647231
3√n 433.17683237442
4√n 94.950862896148
5√n 38.194350808946

Divisors of 81282240

168 divisors

τ Total Divisors 168
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81282239
Sum of the proper positive divisors of n
A Arithmetic Mean 0.005952380952381
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 168
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81282240 can be divided by 168 positive divisors. The sum of these divisors (counting 81282240) is 1, the average is 0.005952380952381.

Base conversion 81282240

Base System Value
2 Binary 100110110000100010011000000
3 Ternary 12122221120021100
4 Quaternary 10312010103000
5 Quinary 131302012430
6 Senary 12022054400
8 Octal 466042300
10 Decimal 81282240
12 Duodecimal 2327a400
16 Hexadecimal 4d844c0
20 Vigesimal 15805c0
36 Base36 1ce5s0

Cryptographic Hash Functions

md5 d510e6835315f2546604cd31c94ccdd4
sha1 b13ddb4cf9174eb608bdf6cb3d2c8e63c689f283
sha256 d3d4cfaa6b5e5b957a278ba9ed41e1751e22a411740113625a31fd8a325ec5f5
sha512 626948b9aed56f622818bd769fa7d0a168c7f92566c923d4e5f1a40e400c3b432e361577b499dd22416eb9db26741c735f52b2b55d63b6738911fd90e2f372b2
ripemd-160 54f6e42ecc64aa2379ba4413fd80272291055fcb

81282240 as geometric shapes

Circle

Radius = n
Diameter 162564480
Circumference 510711376.10264
Area 2.0755882321553E+16

Sphere

Radius = n
Volume 2.2494461443629E+24
Surface area 8.3023529286211E+16
Circumference 510711376.10264

Square

Length = n
Perimeter 325128960
Area 6606802539417600
Diagonal 114950446.18806

Cube

Length = n
Surface area 39640815236505600
Volume 5.3701570964155E+23
Space diagonal 140784969.43301

Equilateral Triangle

Length = n
Perimeter 243846720
Area 2.8608294184616E+15
Altitude 70392484.716504

Triangular Pyramid

Length = n
Surface area 2.8608294184616E+15
Volume 6.3287908315208E+22
Height 38316815.396022