81489215 (number)

81489215 is an odd 8-digits composite number following 81489214 and preceding 81489216. In scientific notation, it is written as 8.1489215 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 64204800 positive integers (up to 81489215) that are relatively prime to 81489215.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-nine thousand two hundred fifteen

Notation

Scientific notation 8.1489215 × 10^7
Engineering notation 8.1489215 × 10^6

Prime Factorization of 81489215

Prime Factorization 5 × 419 × 97 × 401

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81489215
Product of the distinct prime numbers

The prime factorization of 81489215 is 5 × 419 × 97 × 401. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 10, 2, 40, 605, 246, 1000, 2545, 78219, 74082, 571373, 236820, 3697884, 9120032, 88707606, 45360033, 368462637, 756888731, 6222160038, 370715327

Basic calculations (n = 81489215)

Multiplication

n×y
n×2 162978430
n×3 244467645
n×4 325956860
n×5 407446075

Division

n÷y
n÷2 40744607.5
n÷3 27163071.666667
n÷3 20372303.75
n÷5 16297843

Exponentiation

ny
n2 6640492161316225
n3 5.4112849343931E+23
n4 4.4096136144502E+31
n5 3.5933595189486E+39

Nth Root

y√n
2√n 9027.1376969669
3√n 433.54419750631
4√n 95.011250370505
5√n 38.213782448927

Divisors of 81489215

1, 5, 97, 401, 419, 485, 2005, 2095, 38897, 40643, 168019, 194485, 203215, 840095, 16297843, 81489215

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 -81489214
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 81489215 can be divided by 16 positive divisors. The sum of these divisors (counting 81489215) is 1, the average is 0.0625.

Base conversion 81489215

Base System Value
2 Binary 100110110110110110100111111
3 Ternary 12200100002012002
4 Quaternary 10312312310333
5 Quinary 131330123330
6 Senary 12030332515
8 Octal 466666477
10 Decimal 81489215
12 Duodecimal 2335a13b
16 Hexadecimal 4db6d3f
20 Vigesimal 159630f
36 Base36 1cilhb

Cryptographic Hash Functions

md5 105ecdc26367535a8dc316ce3ba3eb37
sha1 e08f311019e3944317adcb5ccb8d456d8416bdef
sha256 26014e0a0c80795af71a732ffd77e16c109907e4fe2a3e8e81086fb49efa943b
sha512 49b07c857c217d778a849ee9e2b0cb7298dba4d0bb6672cf4ed41a9e83ce4d7a414223b2b59497df9d861a4b21bb18e93702204f3af119185be2abaca40fa883
ripemd-160 f987dd3177a4897117df93e02ea3e1254b948327

81489215 as geometric shapes

Circle

Radius = n
Diameter 162978430
Circumference 512011838.3816
Area 2.0861721390212E+16

Sphere

Radius = n
Volume 2.2666737328494E+24
Surface area 8.3446885560847E+16
Circumference 512011838.3816

Square

Length = n
Perimeter 325956860
Area 6640492161316225
Diagonal 115243153.04014

Cube

Length = n
Surface area 39842952967897350
Volume 5.4112849343931E+23
Space diagonal 141143460.6489

Equilateral Triangle

Length = n
Perimeter 244467645
Area 2.8754174526656E+15
Altitude 70571730.324452

Triangular Pyramid

Length = n
Surface area 2.8754174526656E+15
Volume 6.3772604534033E+22
Height 38414384.346712