21961009 is an odd 8-digits composite number following 21961008
and preceding 21961010 . In scientific notation, it is written as 2.1961009 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 18802320 positive integers (up to 21961009) that are relatively prime to 21961009.
21961009 has 8 divisors, whose sum is 25126848
The reverse of 21961009 is 90016912
Previous prime number is 1997
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million nine hundred sixty-one thousand nine
Scientific notation
2.1961009 × 10^7
Engineering notation
2.1961009 × 10^6
Prime Factorization
7 × 1997 × 1571
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21961009
Product of the distinct prime numbers
The prime factorization of 21961009 is 7 × 1997 × 1571.
Since it has a total of 3 prime factors.
3 , 8 , 86 , 56 , 867 , 285 , 3176 , 2617 , 33004 , 90990 , 896736 , 424320 , 5109299 , 6155672 , 57705502 , 98012927 , 375579134 , 800782155 , 945598880 , 7600490556
n×2
43922018
n×3
65883027
n×4
87844036
n×5
109805045
n÷2
10980504.5
n÷3
7320336.3333333
n÷3
5490252.25
n÷5
4392201.8
n2
482285916298081
n3
1.0591485348395E+22
n4
2.3259970505948E+29
n5
5.1081242162086E+36
2 √n
4686.2574619839
3 √n
280.03829833275
4 √n
68.456244872064
5 √n
29.398857826328
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
-21961008
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 21961009 can be divided by 8 positive divisors.
The sum of these divisors (counting 21961009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011110001100100110001
3
Ternary
1112022201211201
4
Quaternary
1103301210301
5
Quinary
21110223014
6
Senary
2102411201
8
Octal
123614461
10
Decimal
21961009
12
Duodecimal
7430b01
16
Hexadecimal
14f1931
20
Vigesimal
6h52a9
36
Base36
d2p81
md5
4a206f8a18d72b7d7cfa552ce2218f41
sha1
51adf5758c28b0d5ee03e18ae9a521720edc0b94
sha256
923c4806ebb7f9a9de4168fc06f2cc318fc7efd700b833bf7ec9ced32f36c263
sha512
2f44240627e72b479d4a1d829787f9f378b26289d8e445cba643caf8afdc7c4845109ec1d80de2a1e19e7b951fc0c84e3c28d522fbf4e4f08efb71a5bd3a595c
ripemd-160
fbfe4285b664bc0dfe8f92e536b119199d065e57
Diameter
43922018
Circumference
137985089.07964
Area
1.5151458915719E+15
Volume
4.4365510081497E+22
Surface area
6.0605835662875E+15
Circumference
137985089.07964
Perimeter
87844036
Area
482285916298081
Diagonal
31057556.771198
Surface area
2893715497788486
Volume
1.0591485348395E+22
Space diagonal
38037583.373477
Perimeter
65883027
Area
2.088359277008E+14
Altitude
19018791.686739
Surface area
2.088359277008E+14
Volume
1.2482185187814E+21
Height
10352518.923733