81620105 (number)

81620105 is an odd 8-digits composite number following 81620104 and preceding 81620106. In scientific notation, it is written as 8.1620105 × 10^7. The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors. There are 52581312 positive integers (up to 81620105) that are relatively prime to 81620105.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred twenty thousand one hundred five

Notation

Scientific notation 8.1620105 × 10^7
Engineering notation 8.1620105 × 10^6

Prime Factorization of 81620105

Prime Factorization 35 × 19 × 139 × 883

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81620105
Product of the distinct prime numbers

The prime factorization of 81620105 is 35 × 19 × 139 × 883. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 10, 81, 52, 410, 100, 9172, 938, 45535, 99189, 238042, 498973, 4137267, 3059431, 3988916, 33622226, 434358124, 297681051, 3573689257, 1941931635

Basic calculations (n = 81620105)

Multiplication

n×y
n×2 163240210
n×3 244860315
n×4 326480420
n×5 408100525

Division

n÷y
n÷2 40810052.5
n÷3 27206701.666667
n÷3 20405026.25
n÷5 16324021

Exponentiation

ny
n2 6661841540211025
n3 5.4374020600539E+23
n4 4.4380132706881E+31
n5 3.6223110914496E+39

Nth Root

y√n
2√n 9034.3845944259
3√n 433.77619648718
4√n 95.04937976876
5√n 38.226050554518

Divisors of 81620105

1, 19, 35, 139, 665, 883, 2641, 4865, 16777, 30905, 92435, 122737, 587195, 2332003, 4295795, 81620105

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 -81620104
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 81620105 can be divided by 16 positive divisors. The sum of these divisors (counting 81620105) is 1, the average is 0.0625.

Base conversion 81620105

Base System Value
2 Binary 100110111010110110010001001
3 Ternary 12200120201201212
4 Quaternary 10313112302021
5 Quinary 131343320410
6 Senary 12033222505
8 Octal 467266211
10 Decimal 81620105
12 Duodecimal 23401a35
16 Hexadecimal 4dd6c89
20 Vigesimal 15a2a55
36 Base36 1cleh5

Cryptographic Hash Functions

md5 21b7b62cc987e2a0bbed635ec0f2b67d
sha1 e13e22735eaba4ee95474aa9145696f4ee033659
sha256 76097a427b3e28310803769c8665175c4212d2f2a14814e0ed0182fd50f44269
sha512 66ea524c0c519f8ad6f95303fa784402d080111d28e5dd572d6ae67370025727bd584c4955c144311b6425d5eede7bbddc5291504b670e1c87c3796f1a1e73cd
ripemd-160 e38da8345b6f2134153411ae5c8c330f40d698c7

81620105 as geometric shapes

Circle

Radius = n
Diameter 163240210
Circumference 512834244.50646
Area 2.0928792442106E+16

Sphere

Radius = n
Volume 2.2776136488639E+24
Surface area 8.3715169768425E+16
Circumference 512834244.50646

Square

Length = n
Perimeter 326480420
Area 6661841540211025
Diagonal 115428259.45332

Cube

Length = n
Surface area 39971049241266150
Volume 5.4374020600539E+23
Space diagonal 141370168.77911

Equilateral Triangle

Length = n
Perimeter 244860315
Area 2.8846620049046E+15
Altitude 70685084.389553

Triangular Pyramid

Length = n
Surface area 2.8846620049046E+15
Volume 6.4080397811696E+22
Height 38476086.484439