81540810 (number)

81540810 is an even 8-digits composite number following 81540809 and preceding 81540811. In scientific notation, it is written as 8.1540810 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 32 positive divisors. There are 20060352 positive integers (up to 81540810) that are relatively prime to 81540810.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred forty thousand eight hundred ten

Notation

Scientific notation 8.1540810 × 10^7
Engineering notation 8.1540810 × 10^6

Prime Factorization of 81540810

Prime Factorization 2 × 45 × 3 × 169 × 1787

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81540810
Product of the distinct prime numbers

The prime factorization of 81540810 is 2 × 45 × 3 × 169 × 1787. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 6, 64, 47, 207, 667, 680, 1164, 14111, 94866, 573232, 651961, 3859853, 6451104, 86835122, 31833179, 527018900, 21789044, 4827297917, 4356931919

Basic calculations (n = 81540810)

Multiplication

n×y
n×2 163081620
n×3 244622430
n×4 326163240
n×5 407704050

Division

n÷y
n÷2 40770405
n÷3 27180270
n÷3 20385202.5
n÷5 16308162

Exponentiation

ny
n2 6648903695456100
n3 5.4215699293948E+23
n4 4.420792035145E+31
n5 3.6047496338727E+39

Nth Root

y√n
2√n 9029.9950166099
3√n 433.63567788853
4√n 95.026285924527
5√n 38.21862024484

Divisors of 81540810

1, 2, 3, 6, 45, 90, 135, 169, 270, 338, 507, 1014, 1787, 3574, 5361, 7605, 10722, 15210, 22815, 45630, 80415, 160830, 241245, 302003, 482490, 604006, 906009, 1812018, 13590135, 27180270, 40770405, 81540810

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81540809
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81540810 can be divided by 32 positive divisors. The sum of these divisors (counting 81540810) is 1, the average is 0.03125.

Base conversion 81540810

Base System Value
2 Binary 100110111000011011011001010
3 Ternary 12200102200222000
4 Quaternary 10313003123022
5 Quinary 131333301220
6 Senary 12031411430
8 Octal 467033312
10 Decimal 81540810
12 Duodecimal 23383b76
16 Hexadecimal 4dc36ca
20 Vigesimal 159cc0a
36 Base36 1cjpai

Cryptographic Hash Functions

md5 f2a23b60ec997a613eedacf2256a395e
sha1 b69214ef260268d83ea7f67e74692fe48fff9ed4
sha256 80adb297a1f2ff4abaeed0e799f02656138323f6b9a4977c3c78dbc171eef237
sha512 da5b1c10ddbc29c4692887edbe203a71a5ae983d7354cbae5d04673fd577c6f9bee9e8390a07a854f6e6aa47a017b780003f3018a335c7816f654be03bbb70f8
ripemd-160 fbb1f3abb65893a2ec4ae3d047bd30f0b2dc9cfa

81540810 as geometric shapes

Circle

Radius = n
Diameter 163081620
Circumference 512336019.32752
Area 2.0888147004071E+16

Sphere

Radius = n
Volume 2.2709819014814E+24
Surface area 8.3552588016284E+16
Circumference 512336019.32752

Square

Length = n
Perimeter 326163240
Area 6648903695456100
Diagonal 115316119.38889

Cube

Length = n
Surface area 39893422172736600
Volume 5.4215699293948E+23
Space diagonal 141232825.81032

Equilateral Triangle

Length = n
Perimeter 244622430
Area 2.8790597537906E+15
Altitude 70616412.90516

Triangular Pyramid

Length = n
Surface area 2.8790597537906E+15
Volume 6.3893814362536E+22
Height 38438706.462963