20921967 is an odd 8-digits composite number following 20921966
and preceding 20921968 . In scientific notation, it is written as 2.0921967 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 12679920 positive integers (up to 20921967) that are relatively prime to 20921967.
20921967 has 8 divisors, whose sum is 25360080
The reverse of 20921967 is 76912902
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million nine hundred twenty-one thousand nine hundred sixty-seven
Scientific notation
2.0921967 × 10^7
Engineering notation
2.0921967 × 10^6
Prime Factorization
9 × 11 × 211333
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921967
Product of the distinct prime numbers
The prime factorization of 20921967 is 9 × 11 × 211333.
Since it has a total of 3 prime factors.
8 , 2 , 19 , 20 , 847 , 577 , 3656 , 5847 , 73712 , 83737 , 739100 , 731104 , 736569 , 7021677 , 46977219 , 29587112 , 49115505 , 716761465 , 2871449523 , 1968860130
n×2
41843934
n×3
62765901
n×4
83687868
n×5
104609835
n÷2
10460983.5
n÷3
6973989
n÷3
5230491.75
n÷5
4184393.4
n2
437728703149089
n3
9.158145482238E+21
n4
1.9160641756058E+29
n5
4.0087831451907E+36
2 √n
4574.0536726191
3 √n
275.55026789074
4 √n
67.631750477265
5 √n
29.11524859164
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20921966
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20921967 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921967) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011111001101111
3
Ternary
1110100221112200
4
Quaternary
1033303321233
5
Quinary
20324000332
6
Senary
2024232543
8
Octal
117637157
10
Decimal
20921967
12
Duodecimal
700b753
16
Hexadecimal
13f3e6f
20
Vigesimal
6af4i7
36
Base36
cgfhr
md5
18f625832aef50785afa0a4af3a6fd1e
sha1
1d557acaf9f7f90c0842cfecf5407392a66bc420
sha256
3bac24055fe6d3472780791722af5a57749fe8fea4f94be3278a28f0644d3665
sha512
76e3c984aa7248576f38d7307b2d534468dc3763956b29b7b6f1f8672aad1f661fa3d1f1dfa3e177fe90e02cb03fa94d75e43ac36be29d340784c3eef9efea6f
ripemd-160
23c0fc146f8ef9476d33da089bc9d3184fc70c78
Diameter
41843934
Circumference
131456595.6517
Area
1.3751652780786E+15
Volume
3.8361550090007E+22
Surface area
5.5006611123143E+15
Circumference
131456595.6517
Perimeter
83687868
Area
437728703149089
Diagonal
29588129.482922
Surface area
2626372218894534
Volume
9.158145482238E+21
Space diagonal
36237909.838279
Perimeter
62765901
Area
1.8954208844636E+14
Altitude
18118954.91914
Surface area
1.8954208844636E+14
Volume
1.0792977955972E+21
Height
9862709.8276408