81768081 (number)

81768081 is an odd 8-digits composite number following 81768080 and preceding 81768082. In scientific notation, it is written as 8.1768081 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 51961728 positive integers (up to 81768081) that are relatively prime to 81768081.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1768081 × 10^7
Engineering notation 8.1768081 × 10^6

Prime Factorization of 81768081

Prime Factorization 3 × 79 × 29 × 11897

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81768081
Product of the distinct prime numbers

The prime factorization of 81768081 is 3 × 79 × 29 × 11897. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 10, 61, 70, 774, 766, 365, 603, 39876, 80316, 72592, 454025, 4267912, 3969760, 64208092, 30056937, 417447506, 991448100, 4656354415, 1810758630

Basic calculations (n = 81768081)

Multiplication

n×y
n×2 163536162
n×3 245304243
n×4 327072324
n×5 408840405

Division

n÷y
n÷2 40884040.5
n÷3 27256027
n÷3 20442020.25
n÷5 16353616.2

Exponentiation

ny
n2 6686019070422561
n3 5.4670294891786E+23
n4 4.4702851010054E+31
n5 3.655266342321E+39

Nth Root

y√n
2√n 9042.5704863164
3√n 434.03818142571
4√n 95.092431277765
5√n 38.239901162593

Divisors of 81768081

1, 3, 29, 79, 87, 237, 2291, 6873, 11897, 35691, 345013, 939863, 1035039, 2819589, 27256027, 81768081

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 -81768080
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 81768081 can be divided by 16 positive divisors. The sum of these divisors (counting 81768081) is 1, the average is 0.0625.

Base conversion 81768081

Base System Value
2 Binary 100110111111010111010010001
3 Ternary 12200212020201110
4 Quaternary 10313322322101
5 Quinary 131413034311
6 Senary 12040323533
8 Octal 467727221
10 Decimal 81768081
12 Duodecimal 234735a9
16 Hexadecimal 4dfae91
20 Vigesimal 15b1041
36 Base36 1coknl

Cryptographic Hash Functions

md5 5f999c0d35a2e34af5e610a3625063e7
sha1 f621c65804b5f4927ca09f7896541daafdfeafce
sha256 947d257596f62299d1e2feecf0a974ac206d11cd29c4ce8eec3e28439e021778
sha512 99e83fccc3832a66a6166b4d31df126a770a7440fefff25e22571afff32b1338b970153c9b6096234f257591cea14ca9855018558fcfb11323908bfdc7e410b6
ripemd-160 bc801247176149fae846f114b7d4c0265196cfed

81768081 as geometric shapes

Circle

Radius = n
Diameter 163536162
Circumference 513764005.13547
Area 2.1004748393401E+16

Sphere

Radius = n
Volume 2.290023957355E+24
Surface area 8.4018993573603E+16
Circumference 513764005.13547

Square

Length = n
Perimeter 327072324
Area 6686019070422561
Diagonal 115637529.11942

Cube

Length = n
Surface area 40116114422535366
Volume 5.4670294891786E+23
Space diagonal 141626470.72941

Equilateral Triangle

Length = n
Perimeter 245304243
Area 2.8951311825866E+15
Altitude 70813235.364704

Triangular Pyramid

Length = n
Surface area 2.8951311825866E+15
Volume 6.4429560412417E+22
Height 38545843.039807