21803661 is an odd 8-digits composite number following 21803660
and preceding 21803662 . In scientific notation, it is written as 2.1803661 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 13209480 positive integers (up to 21803661) that are relatively prime to 21803661.
21803661 has 12 divisors, whose sum is 24752000
The reverse of 21803661 is 16630812
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million eight hundred three thousand six hundred sixty-one
Scientific notation
2.1803661 × 10^7
Engineering notation
2.1803661 × 10^6
Prime Factorization
9 × 99 × 9 × 2719
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2422629
Product of the distinct prime numbers
The prime factorization of 21803661 is 9 × 99 × 9 × 2719.
Since it has a total of 4 prime factors.
5 , 5 , 85 , 61 , 402 , 453 , 3563 , 6870 , 71463 , 96823 , 434996 , 111737 , 8868555 , 5215058 , 24565414 , 83809382 , 877348943 , 673017174 , 79086165 , 8758022805
n×2
43607322
n×3
65410983
n×4
87214644
n×5
109018305
n÷2
10901830.5
n÷3
7267887
n÷3
5450915.25
n÷5
4360732.2
n2
475399633002921
n3
1.036545243752E+22
n4
2.2600481105931E+29
n5
4.9277322847063E+36
2 √n
4669.4390455386
3 √n
279.36788099512
4 √n
68.333293829132
5 √n
29.356608708991
1 , 9 , 81 , 99 , 891 , 2719 , 8019 , 24471 , 220239 , 269181 , 2422629 , 21803661
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
-21803660
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 21803661 can be divided by 12 positive divisors.
The sum of these divisors (counting 21803661) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010011001011001010001101
3
Ternary
1112000202000000
4
Quaternary
1103023022031
5
Quinary
21040204121
6
Senary
2055154513
8
Octal
123131215
10
Decimal
21803661
12
Duodecimal
7375a39
16
Hexadecimal
14cb28d
20
Vigesimal
6g5931
36
Base36
czbt9
md5
203cf0f1f1a651a945685df010c6a990
sha1
bdbef4b7e83025115f793af100583406d3a08e88
sha256
e7f940aa8c14ec90d3e3a77ba0fd0b1eeecb156b17468c2ae4c22ba3069b598b
sha512
abbe24790b4e7f67cb0cba2c10f58bb853326fab313fc142bfa1a8f9fb190b87638d521a17c875d22c95763f43a5a5241b929febdaa564b1592e93255475b55e
ripemd-160
ddad10d2caf18ade0ab4332ec156850f9c90cc1b
Diameter
43607322
Circumference
136996442.43792
Area
1.4935119945613E+15
Volume
4.3418705638463E+22
Surface area
5.974047978245E+15
Circumference
136996442.43792
Perimeter
87214644
Area
475399633002921
Diagonal
30835033.095585
Surface area
2852397798017526
Volume
1.036545243752E+22
Space diagonal
37765048.643008
Perimeter
65410983
Area
2.0585407956516E+14
Altitude
18882524.321504
Surface area
2.0585407956516E+14
Volume
1.2215802847728E+21
Height
10278344.365195