20121906 (number)

20121906 is an even 8-digits composite number following 20121905 and preceding 20121907. In scientific notation, it is written as 2.0121906 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 5732496 positive integers (up to 20121906) that are relatively prime to 20121906.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0121906 × 10^7
Engineering notation 2.0121906 × 10^6

Prime Factorization of 20121906

Prime Factorization 2 × 21 × 659 × 727

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20121906
Product of the distinct prime numbers

The prime factorization of 20121906 is 2 × 21 × 659 × 727. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 8, 67, 27, 598, 348, 5921, 5787, 88501, 12886, 902666, 363277, 5355845, 3579938, 94044426, 80194363, 964391833, 757452009, 7869015061, 8283325672

Basic calculations (n = 20121906)

Multiplication

n×y
n×2 40243812
n×3 60365718
n×4 80487624
n×5 100609530

Division

n÷y
n÷2 10060953
n÷3 6707302
n÷3 5030476.5
n÷5 4024381.2

Exponentiation

ny
n2 404891101072836
n3 8.1471806760241E+21
n4 1.6393680372797E+29
n5 3.2987209545547E+36

Nth Root

y√n
2√n 4485.7447542186
3√n 271.99215122969
4√n 66.975702715378
5√n 28.889087425125

Divisors of 20121906

1, 2, 21, 42, 659, 727, 1318, 1454, 13839, 15267, 27678, 30534, 479093, 958186, 10060953, 20121906

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 -20121905
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 20121906 can be divided by 16 positive divisors. The sum of these divisors (counting 20121906) is 1, the average is 0.0625.

Base conversion 20121906

Base System Value
2 Binary 1001100110000100100110010
3 Ternary 1101212022001210
4 Quaternary 1030300210302
5 Quinary 20122400111
6 Senary 1555140550
8 Octal 114604462
10 Decimal 20121906
12 Duodecimal 68a4756
16 Hexadecimal 1330932
20 Vigesimal 65f4f6
36 Base36 bza5u

Cryptographic Hash Functions

md5 e61f3fceb78f08e74e931d710afa0846
sha1 463289f90622136297f4a187f9e1256a387ceaef
sha256 b15dba75ae4277f877ac0777898a19ac214a06a98aebaed2755fd656ba8c3b0d
sha512 9a953a2cb8049ed294362b1106cd64b8cca9d35d602aea0ac72c0d0a2b07b63b40ccc55bb4ab4a4bd7eeac764a8f3b699bb3518240af091c5cb83d2183340b64
ripemd-160 e64154009e22238b41a76719811358f610adb696

20121906 as geometric shapes

Circle

Radius = n
Diameter 40243812
Circumference 126429664.13165
Area 1.2720029086343E+15

Sphere

Radius = n
Volume 3.4126830612355E+22
Surface area 5.0880116345372E+15
Circumference 126429664.13165

Square

Length = n
Perimeter 80487624
Area 404891101072836
Diagonal 28456672.365997

Cube

Length = n
Surface area 2429346606437016
Volume 8.1471806760241E+21
Space diagonal 34852163.537125

Equilateral Triangle

Length = n
Perimeter 60365718
Area 1.7532298964766E+14
Altitude 17426081.768563

Triangular Pyramid

Length = n
Surface area 1.7532298964766E+14
Volume 9.6015445059477E+20
Height 9485557.4553322