81330665 (number)

81330665 is an odd 8-digits composite number following 81330664 and preceding 81330666. In scientific notation, it is written as 8.1330665 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors. There are 59736000 positive integers (up to 81330665) that are relatively prime to 81330665.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred thirty thousand six hundred sixty-five

Notation

Scientific notation 8.1330665 × 10^7
Engineering notation 8.1330665 × 10^6

Prime Factorization of 81330665

Prime Factorization 5 × 191 × 13 × 6551

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81330665
Product of the distinct prime numbers

The prime factorization of 81330665 is 5 × 191 × 13 × 6551. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 6, 56, 85, 749, 197, 6979, 3052, 29298, 44618, 985326, 947067, 2167402, 1540697, 41728941, 78120463, 83588202, 836220120, 7200941947, 8390654727

Basic calculations (n = 81330665)

Multiplication

n×y
n×2 162661330
n×3 243991995
n×4 325322660
n×5 406653325

Division

n÷y
n÷2 40665332.5
n÷3 27110221.666667
n÷3 20332666.25
n÷5 16266133

Exponentiation

ny
n2 6614677069342225
n3 5.3797608480985E+23
n4 4.3753952731682E+31
n5 3.5585380720463E+39

Nth Root

y√n
2√n 9018.3515677756
3√n 433.26283896
4√n 94.965001804747
5√n 38.19890068561

Divisors of 81330665

1, 5, 13, 65, 191, 955, 2483, 6551, 12415, 32755, 85163, 425815, 1251241, 6256205, 16266133, 81330665

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 -81330664
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 81330665 can be divided by 16 positive divisors. The sum of these divisors (counting 81330665) is 1, the average is 0.0625.

Base conversion 81330665

Base System Value
2 Binary 100110110010000000111101001
3 Ternary 12200001000200212
4 Quaternary 10312100013221
5 Quinary 131310040130
6 Senary 12023110505
8 Octal 466200751
10 Decimal 81330665
12 Duodecimal 232a2435
16 Hexadecimal 4d901e9
20 Vigesimal 15866d5
36 Base36 1cf755

Cryptographic Hash Functions

md5 0126144e4cc358f52b66680430a7691c
sha1 46604836890dec012f0e99f7c746e62b0a855711
sha256 ec6fd0716d74a8471d95b50343bd4d04b9690078dcaca73de3d831f4701c049f
sha512 1e03d9df2033a86a3a1140ed23ac1920dd581adeebc320437082f5998894be813b86697f4a39d4cb1c161bb87c0ff08479551a8b178b8fb03386864f2762e1cf
ripemd-160 fe2c3386f0bdb8e2cb13b9d89bb2073585b945f7

81330665 as geometric shapes

Circle

Radius = n
Diameter 162661330
Circumference 511015639.35115
Area 2.0780620886914E+16

Sphere

Radius = n
Volume 2.2534689544609E+24
Surface area 8.3122483547658E+16
Circumference 511015639.35115

Square

Length = n
Perimeter 325322660
Area 6614677069342225
Diagonal 115018929.47982

Cube

Length = n
Surface area 39688062416053350
Volume 5.3797608480985E+23
Space diagonal 140868843.99336

Equilateral Triangle

Length = n
Perimeter 243991995
Area 2.8642391899404E+15
Altitude 70434421.996682

Triangular Pyramid

Length = n
Surface area 2.8642391899404E+15
Volume 6.3401089614206E+22
Height 38339643.159941