21802821 is an odd 8-digits composite number following 21802820
and preceding 21802822 . In scientific notation, it is written as 2.1802821 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 14524272 positive integers (up to 21802821) that are relatively prime to 21802821.
21802821 has 8 divisors, whose sum is 29092320
The reverse of 21802821 is 12820812
Previous prime number is 2269
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million eight hundred two thousand eight hundred twenty-one
Scientific notation
2.1802821 × 10^7
Engineering notation
2.1802821 × 10^6
Prime Factorization
3 × 2269 × 3203
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21802821
Product of the distinct prime numbers
The prime factorization of 21802821 is 3 × 2269 × 3203.
Since it has a total of 3 prime factors.
3 , 4 , 82 , 79 , 12 , 260 , 8712 , 5347 , 7849 , 79277 , 647222 , 93100 , 7349668 , 8337796 , 56595179 , 50657273 , 113395476 , 41826557 , 1272110800 , 5078254344
n×2
43605642
n×3
65408463
n×4
87211284
n×5
109014105
n÷2
10901410.5
n÷3
7267607
n÷3
5450705.25
n÷5
4360564.2
n2
475363003558041
n3
1.0364254476598E+22
n4
2.2596998515172E+29
n5
4.9267831376357E+36
2 √n
4669.3490981078
3 √n
279.36429334022
4 √n
68.33263567365
5 √n
29.356382509076
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
-21802820
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 21802821 can be divided by 8 positive divisors.
The sum of these divisors (counting 21802821) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011001010111101000101
3
Ternary
1112000200211220
4
Quaternary
1103022331011
5
Quinary
21040142241
6
Senary
2055150553
8
Octal
123127505
10
Decimal
21802821
12
Duodecimal
7375459
16
Hexadecimal
14caf45
20
Vigesimal
6g5711
36
Base36
czb5x
md5
119586f5df23d218be8427b24fd64890
sha1
056a0a8b911f6819d2d2c919997babd85fe57b41
sha256
b5b27bbbc0b5db120f8bf07ce405a070e88cf538a0edafdc8eb91a1ec615fea2
sha512
0aa6b3793aa11ac7c601c1c2e09badb4a313fe46ecf6773ff1425d2c121b054ad5465f7bac5131d16814378c200459c69a8b24621025c76c6c65fe636c63c51c
ripemd-160
08af0dc41dbb7e3f25380f2fe4a714204da4938c
Diameter
43605642
Circumference
136991164.56227
Area
1.4933969197663E+15
Volume
4.3413687631489E+22
Surface area
5.9735876790653E+15
Circumference
136991164.56227
Perimeter
87211284
Area
475363003558041
Diagonal
30833845.156193
Surface area
2852178021348246
Volume
1.0364254476598E+22
Space diagonal
37763593.72033
Perimeter
65408463
Area
2.0583821855027E+14
Altitude
18881796.860165
Surface area
2.0583821855027E+14
Volume
1.2214391037243E+21
Height
10277948.385398