81090986 (number)

81090986 is an even 8-digits composite number following 81090985 and preceding 81090987. In scientific notation, it is written as 8.1090986 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 37808640 positive integers (up to 81090986) that are relatively prime to 81090986.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1090986 × 10^7
Engineering notation 8.1090986 × 10^6

Prime Factorization of 81090986

Prime Factorization 2 × 17 × 109 × 21881

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81090986
Product of the distinct prime numbers

The prime factorization of 81090986 is 2 × 17 × 109 × 21881. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 4, 39, 63, 585, 629, 2648, 4965, 60399, 35136, 104203, 637012, 3769000, 6935778, 69361851, 65004508, 479588287, 197311541, 4907141585, 7914599229

Basic calculations (n = 81090986)

Multiplication

n×y
n×2 162181972
n×3 243272958
n×4 324363944
n×5 405454930

Division

n÷y
n÷2 40545493
n÷3 27030328.666667
n÷3 20272746.5
n÷5 16218197.2

Exponentiation

ny
n2 6575748010452196
n3 5.3323388985511E+23
n4 4.3240461896966E+31
n5 3.5064116903204E+39

Nth Root

y√n
2√n 9005.0533590868
3√n 432.83681605014
4√n 94.894959608436
5√n 38.176359899053

Divisors of 81090986

1, 2, 17, 34, 109, 218, 1853, 3706, 21881, 43762, 371977, 743954, 2385029, 4770058, 40545493, 81090986

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 -81090985
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 81090986 can be divided by 16 positive divisors. The sum of these divisors (counting 81090986) is 1, the average is 0.0625.

Base conversion 81090986

Base System Value
2 Binary 100110101010101100110101010
3 Ternary 12122120211220212
4 Quaternary 10311111212222
5 Quinary 131224402421
6 Senary 12014021122
8 Octal 465254652
10 Decimal 81090986
12 Duodecimal 231a77a2
16 Hexadecimal 4d559aa
20 Vigesimal 156g796
36 Base36 1ca27e

Cryptographic Hash Functions

md5 cff42684c27967963b8bf4a454b26d84
sha1 adfcda778117bdb13047657a59a60c63b091b76b
sha256 a1f265ef7e1f472d2eb948e4ee0b2bcb4ce7e74a4a015f10329525a8ef47bd7d
sha512 eefc616895667167fd00184ace34966a95e61a7db5ff016d78fa93737fa401107cf20aba5e871e83d9db3937726c909f17673589e9d13bb8ec7ba241c5f2948b
ripemd-160 68c7cac158092c22d858835aa46bf766af9a5ead

81090986 as geometric shapes

Circle

Radius = n
Diameter 162181972
Circumference 509509691.77991
Area 2.0658321641494E+16

Sphere

Radius = n
Volume 2.2336048946852E+24
Surface area 8.2633286565977E+16
Circumference 509509691.77991

Square

Length = n
Perimeter 324363944
Area 6575748010452196
Diagonal 114679972.18741

Cube

Length = n
Surface area 39454488062713176
Volume 5.3323388985511E+23
Space diagonal 140453707.78786

Equilateral Triangle

Length = n
Perimeter 243272958
Area 2.8473824129683E+15
Altitude 70226853.893928

Triangular Pyramid

Length = n
Surface area 2.8473824129683E+15
Volume 6.2842216579171E+22
Height 38226657.395802