81872020 (number)

81872020 is an even 8-digits composite number following 81872019 and preceding 81872021. In scientific notation, it is written as 8.1872020 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 12 positive divisors. There are 32748800 positive integers (up to 81872020) that are relatively prime to 81872020.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred seventy-two thousand twenty

Notation

Scientific notation 8.1872020 × 10^7
Engineering notation 8.1872020 × 10^6

Prime Factorization of 81872020

Prime Factorization 2 × 2 × 5 × 4093601

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40936010
Product of the distinct prime numbers

The prime factorization of 81872020 is 2 × 2 × 5 × 4093601. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 1, 83, 53, 457, 276, 4577, 9132, 32986, 42249, 840377, 359773, 7790802, 2019740, 23783660, 42502525, 457290501, 637109864, 2569766684, 7337408285

Basic calculations (n = 81872020)

Multiplication

n×y
n×2 163744040
n×3 245616060
n×4 327488080
n×5 409360100

Division

n÷y
n÷2 40936010
n÷3 27290673.333333
n÷3 20468005
n÷5 16374404

Exponentiation

ny
n2 6703027658880400
n3 5.4879041454841E+23
n4 4.4930579795716E+31
n5 3.6785573276464E+39

Nth Root

y√n
2√n 9048.3158653973
3√n 434.22201188957
4√n 95.122635925406
5√n 38.249617906961

Divisors of 81872020

1, 2, 4, 5, 10, 20, 4093601, 8187202, 16374404, 20468005, 40936010, 81872020

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81872019
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81872020 can be divided by 12 positive divisors. The sum of these divisors (counting 81872020) is 1, the average is 0.083333333333333.

Base conversion 81872020

Base System Value
2 Binary 100111000010100010010010100
3 Ternary 12201001112022001
4 Quaternary 10320110102110
5 Quinary 131424401040
6 Senary 12042445044
8 Octal 470242224
10 Decimal 81872020
12 Duodecimal 23503784
16 Hexadecimal 4e14494
20 Vigesimal 15be010
36 Base36 1cqsus

Cryptographic Hash Functions

md5 edc3064780ece0d45c2396e8e1aa369e
sha1 6705cfded8c89ef9d82e00370b1b074de87e15cb
sha256 e8541be05365458d1b591edebfe091e28105b09b43b634aba35f986a1d8aea61
sha512 2623ee8f8d9a4eba9e57eed34c00d99cd28f07111e1a978cc00c19aeb108457c5067a61aa342bee00aa4ba8f08019faa792cd46cf2b8f309a4379e71b64bd578
ripemd-160 272964e15df5b60c1bf3c2c5b06c27728e65a667

81872020 as geometric shapes

Circle

Radius = n
Diameter 163744040
Circumference 514417073.13311
Area 2.1058182449948E+16

Sphere

Radius = n
Volume 2.298767912941E+24
Surface area 8.4232729799791E+16
Circumference 514417073.13311

Square

Length = n
Perimeter 327488080
Area 6703027658880400
Diagonal 115784521.06288

Cube

Length = n
Surface area 40218165953282400
Volume 5.4879041454841E+23
Space diagonal 141806498.3583

Equilateral Triangle

Length = n
Perimeter 245616060
Area 2.9024961174301E+15
Altitude 70903249.179148

Triangular Pyramid

Length = n
Surface area 2.9024961174301E+15
Volume 6.4675570596226E+22
Height 38594840.354294