81663668 (number)

81663668 is an even 8-digits composite number following 81663667 and preceding 81663669. In scientific notation, it is written as 8.1663668 × 10^7. The sum of its digits is 44. It has a total of 4 prime factors and 12 positive divisors. There are 40587000 positive integers (up to 81663668) that are relatively prime to 81663668.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-three thousand six hundred sixty-eight

Notation

Scientific notation 8.1663668 × 10^7
Engineering notation 8.1663668 × 10^6

Prime Factorization of 81663668

Prime Factorization 2 × 2 × 167 × 122251

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40831834
Product of the distinct prime numbers

The prime factorization of 81663668 is 2 × 2 × 167 × 122251. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 10, 51, 24, 480, 801, 7726, 5102, 1730, 75981, 380090, 942634, 5355621, 5582571, 18533463, 57270658, 483292936, 18001349, 9665132244, 2529052740

Basic calculations (n = 81663668)

Multiplication

n×y
n×2 163327336
n×3 244991004
n×4 326654672
n×5 408318340

Division

n÷y
n÷2 40831834
n÷3 27221222.666667
n÷3 20415917
n÷5 16332733.6

Exponentiation

ny
n2 6668954671214224
n3 5.4461130017709E+23
n4 4.447495640671E+31
n5 3.631988074312E+39

Nth Root

y√n
2√n 9036.7952283982
3√n 433.85335570981
4√n 95.062059878787
5√n 38.230130152405

Divisors of 81663668

1, 2, 4, 167, 334, 668, 122251, 244502, 489004, 20415917, 40831834, 81663668

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 -81663667
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 81663668 can be divided by 12 positive divisors. The sum of these divisors (counting 81663668) is 1, the average is 0.083333333333333.

Base conversion 81663668

Base System Value
2 Binary 100110111100001011010110100
3 Ternary 12200122221111022
4 Quaternary 10313201122310
5 Quinary 131401214133
6 Senary 12034200312
8 Octal 467413264
10 Decimal 81663668
12 Duodecimal 23423098
16 Hexadecimal 4de16b4
20 Vigesimal 15a7j38
36 Base36 1cmc38

Cryptographic Hash Functions

md5 055e81b1b4e6ca400980e5a3c6baf973
sha1 86898b4d56eaccef9b50ee625eb94171af42652f
sha256 c0ccbb1772be03d70d7f5d0a5dd0fc798a9607623f12aac9c1e984e8db35e732
sha512 2e59c01bc57c22c5c67b3390734556b60dab45ffda055e85f792b63804be926f9ababfd32cf94a8e48c32afc74e0b75f76d71014f918db7341ea42c01ffcb0cd
ripemd-160 165bcc803154b4968e583871c16523ebb8dfc603

81663668 as geometric shapes

Circle

Radius = n
Diameter 163327336
Circumference 513107958.90799
Area 2.095113900221E+16

Sphere

Radius = n
Volume 2.2812624795978E+24
Surface area 8.380455600884E+16
Circumference 513107958.90799

Square

Length = n
Perimeter 326654672
Area 6668954671214224
Diagonal 115489866.83873

Cube

Length = n
Surface area 40013728027285344
Volume 5.4461130017709E+23
Space diagonal 141445622.10844

Equilateral Triangle

Length = n
Perimeter 244991004
Area 2.8877420809792E+15
Altitude 70722811.054218

Triangular Pyramid

Length = n
Surface area 2.8877420809792E+15
Volume 6.418305724434E+22
Height 38496622.279578