81291036 (number)

81291036 is an even 8-digits composite number following 81291035 and preceding 81291037. In scientific notation, it is written as 8.1291036 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 24 positive divisors. There are 27067392 positive integers (up to 81291036) that are relatively prime to 81291036.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-one thousand thirty-six

Notation

Scientific notation 8.1291036 × 10^7
Engineering notation 8.1291036 × 10^6

Prime Factorization of 81291036

Prime Factorization 2 × 2 × 3 × 1069 × 6337

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40645518
Product of the distinct prime numbers

The prime factorization of 81291036 is 2 × 2 × 3 × 1069 × 6337. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 8, 23, 27, 778, 666, 8369, 3886, 60366, 30100, 861458, 556224, 4309746, 7534882, 64665113, 9034076, 653214033, 834669132, 9304846827, 871778805

Basic calculations (n = 81291036)

Multiplication

n×y
n×2 162582072
n×3 243873108
n×4 325164144
n×5 406455180

Division

n÷y
n÷2 40645518
n÷3 27097012
n÷3 20322759
n÷5 16258207.2

Exponentiation

ny
n2 6608232533953296
n3 5.3719006881397E+23
n4 4.3668737222799E+31
n5 3.5498768896531E+39

Nth Root

y√n
2√n 9016.1541690457
3√n 433.19245729644
4√n 94.9534315812
5√n 38.195177417485

Divisors of 81291036

1, 2, 3, 4, 6, 12, 1069, 2138, 3207, 4276, 6337, 6414, 12674, 12828, 19011, 25348, 38022, 76044, 6774253, 13548506, 20322759, 27097012, 40645518, 81291036

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81291035
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81291036 can be divided by 24 positive divisors. The sum of these divisors (counting 81291036) is 1, the average is 0.041666666666667.

Base conversion 81291036

Base System Value
2 Binary 100110110000110011100011100
3 Ternary 12122222000100010
4 Quaternary 10312012130130
5 Quinary 131302303121
6 Senary 12022203220
8 Octal 466063434
10 Decimal 81291036
12 Duodecimal 23283510
16 Hexadecimal 4d8671c
20 Vigesimal 15817bg
36 Base36 1ceckc

Cryptographic Hash Functions

md5 3be336013eb25a70c54c8d82ac958002
sha1 5a5283ac9ec2c97dc5fcaca21a1061bf3f6b9832
sha256 8caf213e04eed17ca86b65168e8c05120df6947375ca5b0e5d06b4c694ba7ac5
sha512 aac6d75f81380cec3a7df959eb6f8fb0b122e174cd31fae5b47d9d83f3feda9d1e3966698b66833fbd6f17905e361368879b14c90e4166afd70946b9f8957428
ripemd-160 2c49ca80bfbf343a4e36412931771739e6e62c22

81291036 as geometric shapes

Circle

Radius = n
Diameter 162582072
Circumference 510766643.00061
Area 2.0760374781881E+16

Sphere

Radius = n
Volume 2.2501764983565E+24
Surface area 8.3041499127523E+16
Circumference 510766643.00061

Square

Length = n
Perimeter 325164144
Area 6608232533953296
Diagonal 114962885.61056

Cube

Length = n
Surface area 39649395203719776
Volume 5.3719006881397E+23
Space diagonal 140800204.55191

Equilateral Triangle

Length = n
Perimeter 243873108
Area 2.8614486242592E+15
Altitude 70400102.275955

Triangular Pyramid

Length = n
Surface area 2.8614486242592E+15
Volume 6.3308456740738E+22
Height 38320961.870187