81369909 (number)

81369909 is an odd 8-digits composite number following 81369908 and preceding 81369910. In scientific notation, it is written as 8.1369909 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 53043552 positive integers (up to 81369909) that are relatively prime to 81369909.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1369909 × 10^7
Engineering notation 8.1369909 × 10^6

Prime Factorization of 81369909

Prime Factorization 9 × 59 × 293 × 523

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81369909
Product of the distinct prime numbers

The prime factorization of 81369909 is 9 × 59 × 293 × 523. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 10, 86, 54, 463, 746, 8073, 6912, 78352, 51715, 19549, 239747, 3267349, 5403070, 34504251, 7318816, 983384100, 27301207, 4578118969, 7419443012

Basic calculations (n = 81369909)

Multiplication

n×y
n×2 162739818
n×3 244109727
n×4 325479636
n×5 406849545

Division

n÷y
n÷2 40684954.5
n÷3 27123303
n÷3 20342477.25
n÷5 16273981.8

Exponentiation

ny
n2 6621062090668281
n3 5.3875521980103E+23
n4 4.3838463208485E+31
n5 3.5671317619742E+39

Nth Root

y√n
2√n 9020.5270910297
3√n 433.33251433113
4√n 94.976455456232
5√n 38.202586351787

Divisors of 81369909

1, 9, 59, 293, 523, 531, 2637, 4707, 17287, 30857, 153239, 155583, 277713, 1379151, 9041101, 81369909

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 -81369908
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 81369909 can be divided by 16 positive divisors. The sum of these divisors (counting 81369909) is 1, the average is 0.0625.

Base conversion 81369909

Base System Value
2 Binary 100110110011001101100110101
3 Ternary 12200010000112100
4 Quaternary 10312121230311
5 Quinary 131312314114
6 Senary 12024012313
8 Octal 466315465
10 Decimal 81369909
12 Duodecimal 23301099
16 Hexadecimal 4d99b35
20 Vigesimal 158b4f9
36 Base36 1cg1f9

Cryptographic Hash Functions

md5 d3e160569c00847a771d9b397c54ff09
sha1 ecf4265bd700d6e4727b3c448a6722da909b72b8
sha256 c36d2e6c4d3fb9717f3a70e95328bb63730a5c9737be8700c7ec8f8d2f1da18d
sha512 66e65e3b86082530c3615ed11040e2c20c8d324c6da76c4dca44cfac2cab378ed7f914088570ceb667343336a1d6f53d9d15acadd60f5088f1c76f16aadd497c
ripemd-160 63df574049074526cfcf9698ef3e4fe4e4bbe169

81369909 as geometric shapes

Circle

Radius = n
Diameter 162739818
Circumference 511262216.67534
Area 2.0800680023005E+16

Sphere

Radius = n
Volume 2.2567325874801E+24
Surface area 8.3202720092021E+16
Circumference 511262216.67534

Square

Length = n
Perimeter 325479636
Area 6621062090668281
Diagonal 115074428.87686

Cube

Length = n
Surface area 39726372544009686
Volume 5.3875521980103E+23
Space diagonal 140936816.59526

Equilateral Triangle

Length = n
Perimeter 244109727
Area 2.8670039852764E+15
Altitude 70468408.297628

Triangular Pyramid

Length = n
Surface area 2.8670039852764E+15
Volume 6.3492911553493E+22
Height 38358142.958955