81491353 (number)

81491353 is an odd 8-digits composite number following 81491352 and preceding 81491354. In scientific notation, it is written as 8.1491353 × 10^7. The sum of its digits is 34. It has a total of 4 prime factors and 12 positive divisors. There are 74615040 positive integers (up to 81491353) that are relatively prime to 81491353.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-one thousand three hundred fifty-three

Notation

Scientific notation 8.1491353 × 10^7
Engineering notation 8.1491353 × 10^6

Prime Factorization of 81491353

Prime Factorization 17 × 17 × 37 × 7621

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 4793609
Product of the distinct prime numbers

The prime factorization of 81491353 is 17 × 17 × 37 × 7621. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 4, 87, 62, 782, 234, 9847, 2802, 60282, 50499, 163404, 992667, 1820998, 3202873, 60493267, 71421800, 60196075, 309140632, 7187296007, 5248624713

Basic calculations (n = 81491353)

Multiplication

n×y
n×2 162982706
n×3 244474059
n×4 325965412
n×5 407456765

Division

n÷y
n÷2 40745676.5
n÷3 27163784.333333
n÷3 20372838.25
n÷5 16298270.6

Exponentiation

ny
n2 6640840613770609
n3 5.4117108667352E+23
n4 4.4100764057505E+31
n5 3.5938309313799E+39

Nth Root

y√n
2√n 9027.256116894
3√n 433.54798904849
4√n 95.011873557435
5√n 38.213982966773

Divisors of 81491353

1, 17, 37, 289, 629, 7621, 10693, 129557, 281977, 2202469, 4793609, 81491353

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 -81491352
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 81491353 can be divided by 12 positive divisors. The sum of these divisors (counting 81491353) is 1, the average is 0.083333333333333.

Base conversion 81491353

Base System Value
2 Binary 100110110110111010110011001
3 Ternary 12200100012010021
4 Quaternary 10312313112121
5 Quinary 131330210403
6 Senary 12030350441
8 Octal 466672631
10 Decimal 81491353
12 Duodecimal 2335b421
16 Hexadecimal 4db7599
20 Vigesimal 159687d
36 Base36 1cin4p

Cryptographic Hash Functions

md5 e65069659e9f6f528c44b567ef63c2a3
sha1 52ddfa835528ab7f2af8fc374b83060f6fa8ba2b
sha256 7f9782e37bf2eeeb2115ba423c7126ee7e92e5c81e2f6664f3c5847e83a79032
sha512 237083b1a219bf9d13b89910082220577162c9da33a79589d34b534e59d1987eaecad0bee0e38d58fbd90b03391a8da73e35689c0b498890f763bf51d5b4e799
ripemd-160 bb528bbea49435eaafbcdb77f7c532a8dc4ec768

81491353 as geometric shapes

Circle

Radius = n
Diameter 162982706
Circumference 512025271.83179
Area 2.0862816085882E+16

Sphere

Radius = n
Volume 2.2668521469716E+24
Surface area 8.345126434353E+16
Circumference 512025271.83179

Square

Length = n
Perimeter 325965412
Area 6640840613770609
Diagonal 115246176.62873

Cube

Length = n
Surface area 39845043682623654
Volume 5.4117108667352E+23
Space diagonal 141147163.77353

Equilateral Triangle

Length = n
Perimeter 244474059
Area 2.8755683370044E+15
Altitude 70573581.886765

Triangular Pyramid

Length = n
Surface area 2.8755683370044E+15
Volume 6.3777624194823E+22
Height 38415392.209578