21691869 is an odd 8-digits composite number following 21691868
and preceding 21691870 . In scientific notation, it is written as 2.1691869 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 14436576 positive integers (up to 21691869) that are relatively prime to 21691869.
21691869 has 8 divisors, whose sum is 28971840
The reverse of 21691869 is 96819612
Previous prime number is 617
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million six hundred ninety-one thousand eight hundred sixty-nine
Scientific notation
2.1691869 × 10^7
Engineering notation
2.1691869 × 10^6
Prime Factorization
3 × 617 × 11719
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21691869
Product of the distinct prime numbers
The prime factorization of 21691869 is 3 × 617 × 11719.
Since it has a total of 3 prime factors.
5 , 5 , 7 , 21 , 248 , 125 , 6242 , 1099 , 45232 , 42491 , 103084 , 179868 , 8695804 , 1395123 , 73048512 , 75593622 , 565880942 , 271051820 , 4718328972 , 6647270127
n×2
43383738
n×3
65075607
n×4
86767476
n×5
108459345
n÷2
10845934.5
n÷3
7230623
n÷3
5422967.25
n÷5
4338373.8
n2
470537180713161
n3
1.0206830883659E+22
n4
2.2140523843349E+29
n5
4.802693428013E+36
2 √n
4657.4530593448
3 √n
278.88960316731
4 √n
68.245535087248
5 √n
29.326443266178
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
-21691868
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 21691869 can be divided by 8 positive divisors.
The sum of these divisors (counting 21691869) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010101111110111011101
3
Ternary
1111211001122120
4
Quaternary
1102233313131
5
Quinary
21023114434
6
Senary
2052533153
8
Octal
122576735
10
Decimal
21691869
12
Duodecimal
73211b9
16
Hexadecimal
14afddd
20
Vigesimal
6fb9d9
36
Base36
cwxjx
md5
4bc62e473dd51aa3fb04c8bd6a04b111
sha1
49fbe7541b1375dd2295d0e65ed90e682595fdcb
sha256
45caf913abc704942e9a612e0d76869797000e2668c818b1da2329248014735f
sha512
5265970b59486be6aaf23250de896b99d6810c4f64e75c94cfbbad1fa58fc3c47df39f3b19a3d4e8df51e667f7a0065470747f7f12954d4893fdf72ac7079cf6
ripemd-160
5bd2b465ab3986801ef61a457bcd25f702907a98
Diameter
43383738
Circumference
136294032.58606
Area
1.4782361501693E+15
Volume
4.2754273227383E+22
Surface area
5.9129446006773E+15
Circumference
136294032.58606
Perimeter
86767476
Area
470537180713161
Diagonal
30676935.333021
Surface area
2823223084278966
Volume
1.0206830883659E+22
Space diagonal
37571419.219128
Perimeter
65075607
Area
2.0374857596135E+14
Altitude
18785709.609564
Surface area
2.0374857596135E+14
Volume
1.2028865553766E+21
Height
10225645.111007