81393669 (number)

81393669 is an odd 8-digits composite number following 81393668 and preceding 81393670. In scientific notation, it is written as 8.1393669 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors. There are 46510632 positive integers (up to 81393669) that are relatively prime to 81393669.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1393669 × 10^7
Engineering notation 8.1393669 × 10^6

Prime Factorization of 81393669

Prime Factorization 7 × 3 × 3 × 1291963

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 27131223
Product of the distinct prime numbers

The prime factorization of 81393669 is 7 × 3 × 3 × 1291963. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 7, 96, 88, 945, 344, 883, 9152, 66669, 74786, 277146, 25040, 328047, 8992641, 584398, 68690170, 719582690, 11325363, 9029227968, 234148660

Basic calculations (n = 81393669)

Multiplication

n×y
n×2 162787338
n×3 244181007
n×4 325574676
n×5 406968345

Division

n÷y
n÷2 40696834.5
n÷3 27131223
n÷3 20348417.25
n÷5 16278733.8

Exponentiation

ny
n2 6624929353281561
n3 5.3922730692938E+23
n4 4.3889688935972E+31
n5 3.5723428137674E+39

Nth Root

y√n
2√n 9021.843991114
3√n 433.37468790073
4√n 94.983387974498
5√n 38.204817121031

Divisors of 81393669

1, 3, 7, 9, 21, 63, 1291963, 3875889, 9043741, 11627667, 27131223, 81393669

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81393668
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81393669 can be divided by 12 positive divisors. The sum of these divisors (counting 81393669) is 1, the average is 0.083333333333333.

Base conversion 81393669

Base System Value
2 Binary 100110110011111100000000101
3 Ternary 12200011020010100
4 Quaternary 10312133200011
5 Quinary 131314044134
6 Senary 12024314313
8 Octal 466374005
10 Decimal 81393669
12 Duodecimal 23312999
16 Hexadecimal 4d9f805
20 Vigesimal 158e439
36 Base36 1cgjr9

Cryptographic Hash Functions

md5 75952bfd14d00b451b400c470c5e9d1c
sha1 9047726da66efb48d806ae20758f74f4ee6ce69e
sha256 73869f5091cb6743415c071bf0ee35884f77168af5cb1c54b04a650077f3d69b
sha512 71a38f2db4af3118cc9ae109ecc33361a396341630d235517dab818c5106ea581cfa51a92c2297957da5259814ca45ed916a78dfc57bcfa99580fcdfc85ddcce
ripemd-160 dc992dad42e3f154a33e57783831b9998754308a

81393669 as geometric shapes

Circle

Radius = n
Diameter 162787338
Circumference 511411505.15824
Area 2.0812829386821E+16

Sphere

Radius = n
Volume 2.2587100614191E+24
Surface area 8.3251317547283E+16
Circumference 511411505.15824

Square

Length = n
Perimeter 325574676
Area 6624929353281561
Diagonal 115108030.59111

Cube

Length = n
Surface area 39749576119689366
Volume 5.3922730692938E+23
Space diagonal 140977970.12244

Equilateral Triangle

Length = n
Perimeter 244181007
Area 2.8686785591095E+15
Altitude 70488985.061222

Triangular Pyramid

Length = n
Surface area 2.8686785591095E+15
Volume 6.3548547555121E+22
Height 38369343.530369