81709969 (number)

81709969 is an odd 8-digits composite number following 81709968 and preceding 81709970. In scientific notation, it is written as 8.1709969 × 10^7. The sum of its digits is 49. It has a total of 4 prime factors and 12 positive divisors. There are 74032640 positive integers (up to 81709969) that are relatively prime to 81709969.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1709969 × 10^7
Engineering notation 8.1709969 × 10^6

Prime Factorization of 81709969

Prime Factorization 11 × 11 × 353 × 1913

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 7428179
Product of the distinct prime numbers

The prime factorization of 81709969 is 11 × 11 × 353 × 1913. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 7, 8, 86, 564, 195, 7652, 2400, 30472, 9591, 575152, 418315, 9534283, 8832966, 92658229, 43989607, 329722641, 741904614, 1078963310, 843463925

Basic calculations (n = 81709969)

Multiplication

n×y
n×2 163419938
n×3 245129907
n×4 326839876
n×5 408549845

Division

n÷y
n÷2 40854984.5
n÷3 27236656.333333
n÷3 20427492.25
n÷5 16341993.8

Exponentiation

ny
n2 6676519033980961
n3 5.4553816329449E+23
n4 4.457590641111E+31
n5 3.6422959309987E+39

Nth Root

y√n
2√n 9039.3566695866
3√n 433.93533443016
4√n 95.075531392607
5√n 38.234464251029

Divisors of 81709969

1, 11, 121, 353, 1913, 3883, 21043, 42713, 231473, 675289, 7428179, 81709969

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 -81709968
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 81709969 can be divided by 12 positive divisors. The sum of these divisors (counting 81709969) is 1, the average is 0.083333333333333.

Base conversion 81709969

Base System Value
2 Binary 100110111101100101110010001
3 Ternary 12200202022000011
4 Quaternary 10313230232101
5 Quinary 131404204334
6 Senary 12035154521
8 Octal 467545621
10 Decimal 81709969
12 Duodecimal 23445a41
16 Hexadecimal 4decb91
20 Vigesimal 15adei9
36 Base36 1cnbtd

Cryptographic Hash Functions

md5 30a7caca7769f1b97c7cde527005a49c
sha1 000c7c16c28f732e058da2e369782048e00b350f
sha256 646a60577ec252d44c30a4fbf9c20d3c42c032c8c8e4c1095e364bd597319b0b
sha512 5b723d8c8d097751584dd63ff14548fc51d085658558f2623047338ccc7331d88e2f7cbc469078fc1d844c681db5a849ea8e1d1dd39aece0dd9c3e65a64c747d
ripemd-160 ecd00352c2b8b5055e7593523b78fff36087cac3

81709969 as geometric shapes

Circle

Radius = n
Diameter 163419938
Circumference 513398876.6709
Area 2.0974903148707E+16

Sphere

Radius = n
Volume 2.2851449147451E+24
Surface area 8.3899612594828E+16
Circumference 513398876.6709

Square

Length = n
Perimeter 326839876
Area 6676519033980961
Diagonal 115555346.34089

Cube

Length = n
Surface area 40059114203885766
Volume 5.4553816329449E+23
Space diagonal 141525817.79288

Equilateral Triangle

Length = n
Perimeter 245129907
Area 2.8910175461389E+15
Altitude 70762908.896439

Triangular Pyramid

Length = n
Surface area 2.8910175461389E+15
Volume 6.4292289110265E+22
Height 38518448.780295