20006991 is an odd 8-digits composite number following 20006990
and preceding 20006992 . In scientific notation, it is written as 2.0006991 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 13305600 positive integers (up to 20006991) that are relatively prime to 20006991.
20006991 has 12 divisors, whose sum is 28969200
The reverse of 20006991 is 19960002
Previous prime number is 449
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million six thousand nine hundred ninety-one
Scientific notation
2.0006991 × 10^7
Engineering notation
2.0006991 × 10^6
Prime Factorization
3 × 3 × 449 × 4951
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
6668997
Product of the distinct prime numbers
The prime factorization of 20006991 is 3 × 3 × 449 × 4951.
Since it has a total of 4 prime factors.
7 , 6 , 34 , 47 , 45 , 50 , 9871 , 4928 , 68841 , 63197 , 652978 , 804956 , 1284230 , 4281596 , 27880311 , 9096637 , 219761914 , 751383061 , 6743252469 , 2300921323
n×2
40013982
n×3
60020973
n×4
80027964
n×5
100034955
n÷2
10003495.5
n÷3
6668997
n÷3
5001747.75
n÷5
4001398.2
n2
400279688874081
n3
8.0083921327865E+21
n4
1.6022382932513E+29
n5
3.2055967112934E+36
2 √n
4472.9175042694
3 √n
271.47338546434
4 √n
66.879873686106
5 √n
28.856015019169
1 , 3 , 9 , 449 , 1347 , 4041 , 4951 , 14853 , 44559 , 2222999 , 6668997 , 20006991
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
-20006990
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 20006991 can be divided by 12 positive divisors.
The sum of these divisors (counting 20006991) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001100010100100001001111
3
Ternary
1101122110102200
4
Quaternary
1030110201033
5
Quinary
20110210431
6
Senary
1552452543
8
Octal
114244117
10
Decimal
20006991
12
Duodecimal
684a153
16
Hexadecimal
131484f
20
Vigesimal
650h9b
36
Base36
bwthr
md5
b56fa7deb60cf81893431f49d99d161e
sha1
e916127c5da70619af366d7a8c05cafd636ceee7
sha256
be4d247c47a7403c0e69c76482607f62592c1e308ee7fdd5b61927671d0d525f
sha512
40cdb45b9f33d63468d109d811143ad5dea83effd73e28e76523225e1f090ba99e050bacb926d04b513cd31b02fc6ab637c940db0a0abe843560e7729ed9c4df
ripemd-160
d87b3f7778702330c705e2294fa6b5e7fcf89718
Diameter
40013982
Circumference
125707631.89207
Area
1.257515729948E+15
Volume
3.3545474521905E+22
Surface area
5.0300629197921E+15
Circumference
125707631.89207
Perimeter
80027964
Area
400279688874081
Diagonal
28294158.014476
Surface area
2401678133244486
Volume
8.0083921327865E+21
Space diagonal
34653124.918573
Perimeter
60020973
Area
1.7332618959194E+14
Altitude
17326562.459287
Surface area
1.7332618959194E+14
Volume
9.4379806391573E+20
Height
9431386.0048255