81489620 (number)

81489620 is an even 8-digits composite number following 81489619 and preceding 81489621. In scientific notation, it is written as 8.1489620 × 10^7. The sum of its digits is 38. It has a total of 6 prime factors and 48 positive divisors. There are 31414656 positive integers (up to 81489620) that are relatively prime to 81489620.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489620 × 10^7
Engineering notation 8.1489620 × 10^6

Prime Factorization of 81489620

Prime Factorization 2 × 2 × 5 × 53 × 59 × 1303

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40744810
Product of the distinct prime numbers

The prime factorization of 81489620 is 2 × 2 × 5 × 53 × 59 × 1303. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81489620)

Multiplication

n×y
n×2 162979240
n×3 244468860
n×4 325958480
n×5 407448100

Division

n÷y
n÷2 40744810
n÷3 27163206.666667
n÷3 20372405
n÷5 16297924

Exponentiation

ny
n2 6640558167744400
n3 5.4113656167739E+23
n4 4.4097012779197E+31
n5 3.5934488145119E+39

Nth Root

y√n
2√n 9027.1601292987
3√n 433.54491574086
4√n 95.011368421356
5√n 38.21382043322

Divisors of 81489620

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81489619
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489620 can be divided by 48 positive divisors. The sum of these divisors (counting 81489620) is 1, the average is 0.020833333333333.

Base conversion 81489620

Base System Value
2 Binary 100110110110110111011010100
3 Ternary 12200100002202002
4 Quaternary 10312312323110
5 Quinary 131330131440
6 Senary 12030334432
8 Octal 466667324
10 Decimal 81489620
12 Duodecimal 2335a418
16 Hexadecimal 4db6ed4
20 Vigesimal 1596410
36 Base36 1cilsk

Cryptographic Hash Functions

md5 2c4251496c298b4f3d4b3e389a2d1d07
sha1 a4a6b83120b7891233c6eff9c3ab52fea9cc9984
sha256 64e328465b491e284361ce454851ebbfb3734bf61935af95d42350a224b47f53
sha512 4854acee49c0fa9f20f0324d736c2650bb3565a723133c296c2e861ec2b54bb6826b0f7f76a99156c0010ef4df98e3d454eae2a2662c13e7aaee8df310fae76d
ripemd-160 07e4a90a201c5573a8d90a3da4a2b9f7a8d86a6e

81489620 as geometric shapes

Circle

Radius = n
Diameter 162979240
Circumference 512014383.07165
Area 2.0861928755522E+16

Sphere

Radius = n
Volume 2.266707529006E+24
Surface area 8.3447715022086E+16
Circumference 512014383.07165

Square

Length = n
Perimeter 325958480
Area 6640558167744400
Diagonal 115243725.79663

Cube

Length = n
Surface area 39843349006466400
Volume 5.4113656167739E+23
Space diagonal 141144162.12948

Equilateral Triangle

Length = n
Perimeter 244468860
Area 2.8754460342874E+15
Altitude 70572081.06474

Triangular Pyramid

Length = n
Surface area 2.8754460342874E+15
Volume 6.3773555385009E+22
Height 38414575.265543