20991812 (number)

20991812 is an even 8-digits composite number following 20991811 and preceding 20991813. In scientific notation, it is written as 2.0991812 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 12 positive divisors. There are 10393800 positive integers (up to 20991812) that are relatively prime to 20991812.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0991812 × 10^7
Engineering notation 2.0991812 × 10^6

Prime Factorization of 20991812

Prime Factorization 2 × 2 × 103 × 50951

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10495906
Product of the distinct prime numbers

The prime factorization of 20991812 is 2 × 2 × 103 × 50951. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 2, 64, 43, 88, 545, 9751, 8316, 36539, 93170, 977705, 380181, 3488484, 1506530, 30163324, 34944007, 883332443, 224119624, 6724716714, 5199104659

Basic calculations (n = 20991812)

Multiplication

n×y
n×2 41983624
n×3 62975436
n×4 83967248
n×5 104959060

Division

n÷y
n÷2 10495906
n÷3 6997270.6666667
n÷3 5247953
n÷5 4198362.4

Exponentiation

ny
n2 440656171043344
n3 9.2501714991817E+21
n4 1.9417786107858E+29
n5 4.0761451543237E+36

Nth Root

y√n
2√n 4581.6822238126
3√n 275.85655572099
4√n 67.688124688254
5√n 29.134662105405

Divisors of 20991812

1, 2, 4, 103, 206, 412, 50951, 101902, 203804, 5247953, 10495906, 20991812

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 -20991811
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 20991812 can be divided by 12 positive divisors. The sum of these divisors (counting 20991812) is 1, the average is 0.083333333333333.

Base conversion 20991812

Base System Value
2 Binary 1010000000100111101000100
3 Ternary 1110111111100112
4 Quaternary 1100010331010
5 Quinary 20333214222
6 Senary 2025532152
8 Octal 120047504
10 Decimal 20991812
12 Duodecimal 7044058
16 Hexadecimal 1404f44
20 Vigesimal 6b3jac
36 Base36 chxdw

Cryptographic Hash Functions

md5 e66edcc9a892f35288e550809fc48c7e
sha1 5650aa8075d63507ce1903c23ddfe61cda9896ad
sha256 ca3516b900610d9643725537e4b4d81c4c1aa0192702ef3566b4fff2a04b0e8d
sha512 1924e740cddad07daedf4daec4059b11c6c534c31dc663276a955e2f8990206874829f3449fe94f02e9600b51b9ffe7209baecce50faac528589d86c4947001d
ripemd-160 f09757054e1202a01405bd979f649d39ddac7de0

20991812 as geometric shapes

Circle

Radius = n
Diameter 41983624
Circumference 131895444.72948
Area 1.3843621897088E+15

Sphere

Radius = n
Volume 3.8747027768367E+22
Surface area 5.5374487588351E+15
Circumference 131895444.72948

Square

Length = n
Perimeter 83967248
Area 440656171043344
Diagonal 29686905.229186

Cube

Length = n
Surface area 2643937026260064
Volume 9.2501714991817E+21
Space diagonal 36358884.926934

Equilateral Triangle

Length = n
Perimeter 62975436
Area 1.9080971922896E+14
Altitude 18179442.463467

Triangular Pyramid

Length = n
Surface area 1.9080971922896E+14
Volume 1.0901431657017E+21
Height 9895635.0763954