20121990 (number)

20121990 is an even 8-digits composite number following 20121989 and preceding 20121991. In scientific notation, it is written as 2.0121990 × 10^7. The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors. There are 4599264 positive integers (up to 20121990) that are relatively prime to 20121990.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0121990 × 10^7
Engineering notation 2.0121990 × 10^6

Prime Factorization of 20121990

Prime Factorization 2 × 21 × 5 × 95819

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20121990
Product of the distinct prime numbers

The prime factorization of 20121990 is 2 × 21 × 5 × 95819. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 8, 89, 62, 231, 210, 1355, 8237, 70834, 87725, 578173, 357513, 9411406, 3214610, 79114933, 16513069, 287490721, 981923260, 666887442, 5102623178

Basic calculations (n = 20121990)

Multiplication

n×y
n×2 40243980
n×3 60365970
n×4 80487960
n×5 100609950

Division

n÷y
n÷2 10060995
n÷3 6707330
n÷3 5030497.5
n÷5 4024398

Exponentiation

ny
n2 404894481560100
n3 8.1472827090075E+21
n4 1.6393954119782E+29
n5 3.2987898085872E+36

Nth Root

y√n
2√n 4485.7541172026
3√n 271.99252971121
4√n 66.975772613704
5√n 28.889111544901

Divisors of 20121990

1, 2, 5, 10, 21, 42, 105, 210, 95819, 191638, 479095, 958190, 2012199, 4024398, 10060995, 20121990

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 -20121989
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 20121990 can be divided by 16 positive divisors. The sum of these divisors (counting 20121990) is 1, the average is 0.0625.

Base conversion 20121990

Base System Value
2 Binary 1001100110000100110000110
3 Ternary 1101212022011220
4 Quaternary 1030300212012
5 Quinary 20122400430
6 Senary 1555141210
8 Octal 114604606
10 Decimal 20121990
12 Duodecimal 68a4806
16 Hexadecimal 1330986
20 Vigesimal 65f4ja
36 Base36 bza86

Cryptographic Hash Functions

md5 1beb8f2c734399d03f5d8c081903007f
sha1 e01cb1c839ae0c7cba2f4047b507db8d174555d6
sha256 cdcf377e6e7c1d394417569d1e552a82575a131c4de660ea84adbb903393d40f
sha512 ef48b7ef2e9e15370c43415a7dc839e83a18b4c2f8fa7f015ff0b393a6162f7904cdb61bf84718ef212a85289cfb6cb8bbdcdbcf3b58b3bd3ae82e7be16ca2d0
ripemd-160 bbcd2d4a3ca33b9e08e2feaa255395a79fc176ce

20121990 as geometric shapes

Circle

Radius = n
Diameter 40243980
Circumference 126430191.91921
Area 1.2720135287483E+15

Sphere

Radius = n
Volume 3.4127258007116E+22
Surface area 5.088054114993E+15
Circumference 126430191.91921

Square

Length = n
Perimeter 80487960
Area 404894481560100
Diagonal 28456791.159936

Cube

Length = n
Surface area 2429366889360600
Volume 8.1472827090075E+21
Space diagonal 34852309.029393

Equilateral Triangle

Length = n
Perimeter 60365970
Area 1.7532445344159E+14
Altitude 17426154.514696

Triangular Pyramid

Length = n
Surface area 1.7532445344159E+14
Volume 9.6016647529719E+20
Height 9485597.0533119