20121921 (number)

20121921 is an odd 8-digits composite number following 20121920 and preceding 20121922. In scientific notation, it is written as 2.0121921 × 10^7. The sum of its digits is 18. It has a total of 4 prime factors and 12 positive divisors. There are 13263360 positive integers (up to 20121921) that are relatively prime to 20121921.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0121921 × 10^7
Engineering notation 2.0121921 × 10^6

Prime Factorization of 20121921

Prime Factorization 3 × 3 × 89 × 25121

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 6707307
Product of the distinct prime numbers

The prime factorization of 20121921 is 3 × 3 × 89 × 25121. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 6, 10, 93, 279, 465, 8820, 9025, 49907, 76012, 535136, 109626, 872079, 9529357, 44269911, 82996650, 990853173, 888095841, 3170746967, 3054998260

Basic calculations (n = 20121921)

Multiplication

n×y
n×2 40243842
n×3 60365763
n×4 80487684
n×5 100609605

Division

n÷y
n÷2 10060960.5
n÷3 6707307
n÷3 5030480.25
n÷5 4024384.2

Exponentiation

ny
n2 404891704730241
n3 8.1471988961372E+21
n4 1.6393729255936E+29
n5 3.2987332498333E+36

Nth Root

y√n
2√n 4485.7464261815
3√n 271.99221881575
4√n 66.975715197238
5√n 28.889091732234

Divisors of 20121921

1, 3, 9, 89, 267, 801, 25121, 75363, 226089, 2235769, 6707307, 20121921

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 -20121920
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 20121921 can be divided by 12 positive divisors. The sum of these divisors (counting 20121921) is 1, the average is 0.083333333333333.

Base conversion 20121921

Base System Value
2 Binary 1001100110000100101000001
3 Ternary 1101212022002100
4 Quaternary 1030300211001
5 Quinary 20122400141
6 Senary 1555141013
8 Octal 114604501
10 Decimal 20121921
12 Duodecimal 68a4769
16 Hexadecimal 1330941
20 Vigesimal 65f4g1
36 Base36 bza69

Cryptographic Hash Functions

md5 a501e5713024f90dfa47bff930031cca
sha1 6f2fe392b810005fb32972718a8a356575f177a4
sha256 e98593be1f2e38218eff650edcf7cd239dd96afcb6889bdef763080bcdbe935d
sha512 0c2acf5780aee3d05323a95ad3e887d4f6f2cc2d1504b54025193f0b47634e00f1cd7b1b33ce60ad60fffdb52041a7644566cb2dbc93966b58beaa21a315a658
ripemd-160 ec87c1ebf681f3510824578afa8e3aab5a4cb05a

20121921 as geometric shapes

Circle

Radius = n
Diameter 40243842
Circumference 126429758.37943
Area 1.27200480508E+15

Sphere

Radius = n
Volume 3.4126906932586E+22
Surface area 5.0880192203199E+15
Circumference 126429758.37943

Square

Length = n
Perimeter 80487684
Area 404891704730241
Diagonal 28456693.5792

Cube

Length = n
Surface area 2429350228381446
Volume 8.1471988961372E+21
Space diagonal 34852189.517887

Equilateral Triangle

Length = n
Perimeter 60365763
Area 1.7532325103899E+14
Altitude 17426094.758944

Triangular Pyramid

Length = n
Surface area 1.7532325103899E+14
Volume 9.601565978557E+20
Height 9485564.5264