21697951 is an odd 8-digits composite number following 21697950
and preceding 21697952 . In scientific notation, it is written as 2.1697951 × 10^7.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 19725400 positive integers (up to 21697951) that are relatively prime to 21697951.
21697951 has 4 divisors, whose sum is 23670504
The reverse of 21697951 is 15979612
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
twenty-one million six hundred ninety-seven thousand nine hundred fifty-one
Scientific notation
2.1697951 × 10^7
Engineering notation
2.1697951 × 10^6
Prime Factorization
11 × 1972541
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21697951
Product of the distinct prime numbers
The prime factorization of 21697951 is 11 × 1972541.
Since it has a total of 2 prime factors.
6 , 9 , 85 , 67 , 910 , 544 , 9906 , 3584 , 16951 , 27031 , 251688 , 630589 , 5283100 , 7808480 , 92973226 , 39020680 , 923242694 , 281651214 , 6620025674 , 2723455731
n×2
43395902
n×3
65093853
n×4
86791804
n×5
108489755
n÷2
10848975.5
n÷3
7232650.3333333
n÷3
5424487.75
n÷5
4339590.2
n2
470801077598401
n3
1.0215418712477E+22
n4
2.2165365466782E+29
n5
4.8094301379532E+36
2 √n
4658.1059455534
3 √n
278.91566589867
4 √n
68.2503182817
5 √n
29.328087600536
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21697950
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21697951 can be divided by 4 positive divisors.
The sum of these divisors (counting 21697951) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010110001010110011111
3
Ternary
1111211100222211
4
Quaternary
1102301112133
5
Quinary
21023313301
6
Senary
2053021251
8
Octal
122612637
10
Decimal
21697951
12
Duodecimal
7324827
16
Hexadecimal
14b159f
20
Vigesimal
6fc4hb
36
Base36
cx28v
md5
799e94a8fd8e51d2030a0911926c632b
sha1
74466a8763a0a714a5ad565dd1a881eaf2024a75
sha256
101676721dd66dd75689b4df15582b3907c68752c207ddc67bf86dd4ef38fc57
sha512
0f0ed427678a48316a958217c1226c867beafd2f1fa1b92c3f57cc5015077b31bb1e93659a9e75df8cd5a1fdd42213e960d4d3f703c145f4309b52765b18b9ee
ripemd-160
1b1e4bdb0a705305facfe28cbfea7d662a9207b5
Diameter
43395902
Circumference
136332246.9191
Area
1.4790652066853E+15
Volume
4.2790245840617E+22
Surface area
5.9162608267412E+15
Circumference
136332246.9191
Perimeter
86791804
Area
470801077598401
Diagonal
30685536.579907
Surface area
2824806465590406
Volume
1.0215418712477E+22
Space diagonal
37581953.55214
Perimeter
65093853
Area
2.0386284666465E+14
Altitude
18790976.77607
Surface area
2.0386284666465E+14
Volume
1.2038986407088E+21
Height
10228512.193302