81006989 (number)

81006989 is an odd 8-digits composite number following 81006988 and preceding 81006990. In scientific notation, it is written as 8.1006989 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 62472960 positive integers (up to 81006989) that are relatively prime to 81006989.

Interesting facts

Basic properties

Name

Name eighty-one million six thousand nine hundred eighty-nine

Notation

Scientific notation 8.1006989 × 10^7
Engineering notation 8.1006989 × 10^6

Prime Factorization of 81006989

Prime Factorization 119 × 23 × 17 × 1741

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81006989
Product of the distinct prime numbers

The prime factorization of 81006989 is 119 × 23 × 17 × 1741. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 6, 86, 67, 323, 614, 4513, 6378, 77541, 25548, 965527, 219760, 9974628, 1953296, 43753503, 72074034, 20647065, 250271766, 3668200672, 7166206082

Basic calculations (n = 81006989)

Multiplication

n×y
n×2 162013978
n×3 243020967
n×4 324027956
n×5 405034945

Division

n÷y
n÷2 40503494.5
n÷3 27002329.666667
n÷3 20251747.25
n÷5 16201397.8

Exponentiation

ny
n2 6562132266846121
n3 5.3157857635695E+23
n4 4.3061579887583E+31
n5 3.4882889282761E+39

Nth Root

y√n
2√n 9000.3882694026
3√n 432.6873150334
4√n 94.870376142411
5√n 38.168447726976

Divisors of 81006989

1, 17, 23, 119, 391, 1741, 2023, 2737, 29597, 40043, 46529, 207179, 680731, 3522043, 4765117, 81006989

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 -81006988
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 81006989 can be divided by 16 positive divisors. The sum of these divisors (counting 81006989) is 1, the average is 0.0625.

Base conversion 81006989

Base System Value
2 Binary 100110101000001000110001101
3 Ternary 12122102120200212
4 Quaternary 10311001012031
5 Quinary 131214210424
6 Senary 12012132205
8 Octal 465010615
10 Decimal 81006989
12 Duodecimal 23167065
16 Hexadecimal 4d4118d
20 Vigesimal 1565h99
36 Base36 1c89e5

Cryptographic Hash Functions

md5 07440151dfc7e897e0ad80b9331b0dbe
sha1 c4cb1331ffbaadfc017d33e5bcf1b29b5ad11752
sha256 e930e9383f24ffed6e365ff413a137efee5f3d5e9fddd390f99dbe870196629e
sha512 f8a4820d93d979aecc174a775140deed1465e73342da6088198389f218060e30ab36d1e41a7baf131de8b4bc8ae8b3ff1c4f333f7c626ebe852b451214c08336
ripemd-160 fc4d1413a5a0903e9a7269a24e5eaa711d9bb2f0

81006989 as geometric shapes

Circle

Radius = n
Diameter 162013978
Circumference 508981923.06366
Area 2.0615546521408E+16

Sphere

Radius = n
Volume 2.2266711337183E+24
Surface area 8.2462186085633E+16
Circumference 508981923.06366

Square

Length = n
Perimeter 324027956
Area 6562132266846121
Diagonal 114561182.49081

Cube

Length = n
Surface area 39372793601076726
Volume 5.3157857635695E+23
Space diagonal 140308220.71617

Equilateral Triangle

Length = n
Perimeter 243020967
Area 2.8414866230412E+15
Altitude 70154110.358087

Triangular Pyramid

Length = n
Surface area 2.8414866230412E+15
Volume 6.2647136012582E+22
Height 38187060.830269