21091906 (number)

21091906 is an even 8-digits composite number following 21091905 and preceding 21091907. In scientific notation, it is written as 2.1091906 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 9510480 positive integers (up to 21091906) that are relatively prime to 21091906.

Interesting facts

Basic properties

Name

Name twenty-one million ninety-one thousand nine hundred six

Notation

Scientific notation 2.1091906 × 10^7
Engineering notation 2.1091906 × 10^6

Prime Factorization of 21091906

Prime Factorization 2 × 11 × 127 × 7549

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21091906
Product of the distinct prime numbers

The prime factorization of 21091906 is 2 × 11 × 127 × 7549. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 7, 81, 24, 612, 422, 7367, 8114, 19658, 65310, 405978, 573607, 9951036, 8872496, 54082804, 49710644, 58517326, 115515918, 9572452728, 610667653

Basic calculations (n = 21091906)

Multiplication

n×y
n×2 42183812
n×3 63275718
n×4 84367624
n×5 105459530

Division

n÷y
n÷2 10545953
n÷3 7030635.3333333
n÷3 5272976.5
n÷5 4218381.2

Exponentiation

ny
n2 444868498712836
n3 9.3831245572123E+21
n4 1.9790798114701E+29
n5 4.1742565350026E+36

Nth Root

y√n
2√n 4592.5925140382
3√n 276.29431078078
4√n 67.768669118098
5√n 29.162393476691

Divisors of 21091906

1, 2, 11, 22, 127, 254, 1397, 2794, 7549, 15098, 83039, 166078, 958723, 1917446, 10545953, 21091906

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 -21091905
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 21091906 can be divided by 16 positive divisors. The sum of these divisors (counting 21091906) is 1, the average is 0.0625.

Base conversion 21091906

Base System Value
2 Binary 1010000011101011001000010
3 Ternary 1110200120122201
4 Quaternary 1100131121002
5 Quinary 20344420111
6 Senary 2032023414
8 Octal 120353102
10 Decimal 21091906
12 Duodecimal 7091b6a
16 Hexadecimal 141d642
20 Vigesimal 6bg9f6
36 Base36 ck2ma

Cryptographic Hash Functions

md5 7ba8241f345c1fa668b0bad3fb8b37c4
sha1 3bc3461950f60955c855535d4e9917db7be883a7
sha256 ba86ecb69353a6370142162f586badf6f0d3e07b35f6f02ad8ff0ce95859e05a
sha512 68c1c7aeac5c4be01b2aaabfb9f64182e8567c50048da55aa22e82e995e4145096bbfe7a0770bba13b15e9751fff17c968c1569d544d2565305b09310d34a5cf
ripemd-160 6702cc8356a39bc8919d88a565f1acd7320a2a5b

21091906 as geometric shapes

Circle

Radius = n
Diameter 42183812
Circumference 132524353.87961
Area 1.3975956073698E+15

Sphere

Radius = n
Volume 3.9303940235541E+22
Surface area 5.5903824294791E+15
Circumference 132524353.87961

Square

Length = n
Perimeter 84367624
Area 444868498712836
Diagonal 29828459.521498

Cube

Length = n
Surface area 2669210992277016
Volume 9.3831245572123E+21
Space diagonal 36532252.820467

Equilateral Triangle

Length = n
Perimeter 63275718
Area 1.9263371061438E+14
Altitude 18266126.410233

Triangular Pyramid

Length = n
Surface area 1.9263371061438E+14
Volume 1.1058118338538E+21
Height 9942819.8404995