81301913 (number)

81301913 is an odd 8-digits composite number following 81301912 and preceding 81301914. In scientific notation, it is written as 8.1301913 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 16 positive divisors. There are 61637760 positive integers (up to 81301913) that are relatively prime to 81301913.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred one thousand nine hundred thirteen

Notation

Scientific notation 8.1301913 × 10^7
Engineering notation 8.1301913 × 10^6

Prime Factorization of 81301913

Prime Factorization 7 × 37 × 11 × 28537

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81301913
Product of the distinct prime numbers

The prime factorization of 81301913 is 7 × 37 × 11 × 28537. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 4, 93, 93, 199, 424, 4634, 8163, 91155, 52426, 819867, 429418, 2704112, 8151576, 82082051, 39885740, 677076635, 941504873, 1173017461, 6172484393

Basic calculations (n = 81301913)

Multiplication

n×y
n×2 162603826
n×3 243905739
n×4 325207652
n×5 406509565

Division

n÷y
n÷2 40650956.5
n÷3 27100637.666667
n÷3 20325478.25
n÷5 16260382.6

Exponentiation

ny
n2 6610001057459569
n3 5.3740573090349E+23
n4 4.3692113979617E+31
n5 3.5522524495569E+39

Nth Root

y√n
2√n 9016.757343968
3√n 433.21177727911
4√n 94.95660768987
5√n 38.196199490106

Divisors of 81301913

1, 7, 11, 37, 77, 259, 407, 2849, 28537, 199759, 313907, 1055869, 2197349, 7391083, 11614559, 81301913

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 -81301912
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 81301913 can be divided by 16 positive divisors. The sum of these divisors (counting 81301913) is 1, the average is 0.0625.

Base conversion 81301913

Base System Value
2 Binary 100110110001001000110011001
3 Ternary 12122222120020222
4 Quaternary 10312021012121
5 Quinary 131303130123
6 Senary 12022325425
8 Octal 466110631
10 Decimal 81301913
12 Duodecimal 23289875
16 Hexadecimal 4d89199
20 Vigesimal 1582efd
36 Base36 1cekyh

Cryptographic Hash Functions

md5 dbbd59a32904bfdf72b1492d5017ed9f
sha1 0da902c10260ea9bd4d44573c9120fb88e1be26c
sha256 7b8d82e9d8cf3ce10f98ebc463d9d90d61ceb83afef84bb9c00fbbcfdc390ea1
sha512 392f603b1babaa5b973837e320f19a9f10359207c3680fad7fb0ce4f1ff6fa29df00021ffb6ccc014c8d95975938abc34e9b8932840129c7bd011150905fe15b
ripemd-160 3e4ef19d71d34065cd2d311e2a93e33ffc76d249

81301913 as geometric shapes

Circle

Radius = n
Diameter 162603826
Circumference 510834985.20719
Area 2.0765930762336E+16

Sphere

Radius = n
Volume 2.2510798616046E+24
Surface area 8.3063723049343E+16
Circumference 510834985.20719

Square

Length = n
Perimeter 325207652
Area 6610001057459569
Diagonal 114978268.01148

Cube

Length = n
Surface area 39660006344757414
Volume 5.3740573090349E+23
Space diagonal 140819044.06854

Equilateral Triangle

Length = n
Perimeter 243905739
Area 2.862214417401E+15
Altitude 70409522.034272

Triangular Pyramid

Length = n
Surface area 2.862214417401E+15
Volume 6.3333872761728E+22
Height 38326089.337159