81489688 (number)

81489688 is an even 8-digits composite number following 81489687 and preceding 81489689. In scientific notation, it is written as 8.1489688 × 10^7. The sum of its digits is 52. It has a total of 6 prime factors and 32 positive divisors. There are 33416064 positive integers (up to 81489688) that are relatively prime to 81489688.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489688 × 10^7
Engineering notation 8.1489688 × 10^6

Prime Factorization of 81489688

Prime Factorization 2 × 2 × 2 × 469 × 37 × 587

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20372422
Product of the distinct prime numbers

The prime factorization of 81489688 is 2 × 2 × 2 × 469 × 37 × 587. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 9, 100, 33, 879, 834, 1607, 3498, 31328, 22591, 307252, 207439, 1781565, 4787508, 3742997, 42832259, 251771370, 541253701, 2476684031, 4356950481

Basic calculations (n = 81489688)

Multiplication

n×y
n×2 162979376
n×3 244469064
n×4 325958752
n×5 407448440

Division

n÷y
n÷2 40744844
n÷3 27163229.333333
n÷3 20372422
n÷5 16297937.6

Exponentiation

ny
n2 6640569250337344
n3 5.4113791635238E+23
n4 4.4097159968526E+31
n5 3.5934638075213E+39

Nth Root

y√n
2√n 9027.1638957094
3√n 433.5450363331
4√n 95.011388242197
5√n 38.213826810815

Divisors of 81489688

1, 2, 4, 8, 37, 74, 148, 296, 469, 587, 938, 1174, 1876, 2348, 3752, 4696, 17353, 21719, 34706, 43438, 69412, 86876, 138824, 173752, 275303, 550606, 1101212, 2202424, 10186211, 20372422, 40744844, 81489688

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81489687
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489688 can be divided by 32 positive divisors. The sum of these divisors (counting 81489688) is 1, the average is 0.03125.

Base conversion 81489688

Base System Value
2 Binary 100110110110110111100011000
3 Ternary 12200100002211121
4 Quaternary 10312312330120
5 Quinary 131330132223
6 Senary 12030335024
8 Octal 466667430
10 Decimal 81489688
12 Duodecimal 2335a474
16 Hexadecimal 4db6f18
20 Vigesimal 1596448
36 Base36 1cilug

Cryptographic Hash Functions

md5 edbd3a8cb49995ed5565d79986bc3609
sha1 9bc679daec7e0043ef874b371619e6b8679e752b
sha256 c24484a00502f0c217cd5773340e10f6bb4cb78ef84a714d10de0c6c4dc99c11
sha512 6d52058c5e00a5a1834ce559d60c2e771e0d4d490ccf7ca3bf3af94ce4c6430537cec5feb94f0909cf81fd0b3e9d4ad412f87d6ba37643032426fc7cf1647630
ripemd-160 425ea2bc29edfa5d9e78b458bc10ad44a3428495

81489688 as geometric shapes

Circle

Radius = n
Diameter 162979376
Circumference 512014810.32825
Area 2.0861963572514E+16

Sphere

Radius = n
Volume 2.2667132034554E+24
Surface area 8.3447854290056E+16
Circumference 512014810.32825

Square

Length = n
Perimeter 325958752
Area 6640569250337344
Diagonal 115243821.96315

Cube

Length = n
Surface area 39843415502024064
Volume 5.4113791635238E+23
Space diagonal 141144279.90894

Equilateral Triangle

Length = n
Perimeter 244469064
Area 2.875450833191E+15
Altitude 70572139.954468

Triangular Pyramid

Length = n
Surface area 2.875450833191E+15
Volume 6.3773715034988E+22
Height 38414607.321051