81009968 (number)

81009968 is an even 8-digits composite number following 81009967 and preceding 81009969. In scientific notation, it is written as 8.1009968 × 10^7. The sum of its digits is 41. It has a total of 7 prime factors and 40 positive divisors. There are 36824832 positive integers (up to 81009968) that are relatively prime to 81009968.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1009968 × 10^7
Engineering notation 8.1009968 × 10^6

Prime Factorization of 81009968

Prime Factorization 2 × 2 × 2 × 2 × 13 × 67 × 5813

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10126246
Product of the distinct prime numbers

The prime factorization of 81009968 is 2 × 2 × 2 × 2 × 13 × 67 × 5813. Since it has a total of 7 prime factors.

Most popular turbo-numbers

9, 3, 27, 91, 319, 861, 379, 8638, 67298, 75221, 421384, 517499, 4014902, 2443356, 54941273, 400996, 438985577, 794290750, 6037798130, 9037107453

Basic calculations (n = 81009968)

Multiplication

n×y
n×2 162019936
n×3 243029904
n×4 324039872
n×5 405049840

Division

n÷y
n÷2 40504984
n÷3 27003322.666667
n÷3 20252492
n÷5 16201993.6

Exponentiation

ny
n2 6562614915361024
n3 5.3163722428972E+23
n4 4.3067914527319E+31
n5 3.4889303776848E+39

Nth Root

y√n
2√n 9000.5537607416
3√n 432.69261893671
4√n 94.871248335529
5√n 38.168728448763

Divisors of 81009968

1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1742, 3484, 5813, 6968, 11626, 13936, 23252, 46504, 75569, 93008, 151138, 302276, 389471, 604552, 778942, 1209104, 1557884, 3115768, 5063123, 6231536, 10126246, 20252492, 40504984, 81009968

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81009967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81009968 can be divided by 40 positive divisors. The sum of these divisors (counting 81009968) is 1, the average is 0.025.

Base conversion 81009968

Base System Value
2 Binary 100110101000001110100110000
3 Ternary 12122102201210012
4 Quaternary 10311001310300
5 Quinary 131214304333
6 Senary 12012154052
8 Octal 465016460
10 Decimal 81009968
12 Duodecimal 23168928
16 Hexadecimal 4d41d30
20 Vigesimal 15664i8
36 Base36 1c8bow

Cryptographic Hash Functions

md5 6d38c4d586e49cc2a55450d828374b86
sha1 7b3f40c7c162ae937d96ab0dc338a39cc3a8d8c4
sha256 984dcef9e0a05483668dc0a6072cd216c7baf652a877a9a7d94dad70e05c9d4d
sha512 58a18097cc768ece89c60ce2a4c0c892ed3b3c56c820fd98068be0ed43ddf608af3b6198cdd67121cb552b0e7f7beb02a166a3864175291df9fff8f446020231
ripemd-160 3333c417cb959b570a9b8302b345596bf5e47830

81009968 as geometric shapes

Circle

Radius = n
Diameter 162019936
Circumference 509000640.67269
Area 2.0617062806437E+16

Sphere

Radius = n
Volume 2.2269167976046E+24
Surface area 8.2468251225748E+16
Circumference 509000640.67269

Square

Length = n
Perimeter 324039872
Area 6562614915361024
Diagonal 114565395.43301

Cube

Length = n
Surface area 39375689492166144
Volume 5.3163722428972E+23
Space diagonal 140313380.49553

Equilateral Triangle

Length = n
Perimeter 243029904
Area 2.8416956159787E+15
Altitude 70156690.247764

Triangular Pyramid

Length = n
Surface area 2.8416956159787E+15
Volume 6.2654047737742E+22
Height 38188465.144337