21808508 is an even 8-digits composite number following 21808507
and preceding 21808509 . In scientific notation, it is written as 2.1808508 × 10^7.
The sum of its digits is 32. It has a total of 5 prime factors and 24 positive divisors.
There are 10373616 positive integers (up to 21808508) that are relatively prime to 21808508.
21808508 has 24 divisors, whose sum is 40040448
The reverse of 21808508 is 80580812
Previous prime number is 23
Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million eight hundred eight thousand five hundred eight
Scientific notation
2.1808508 × 10^7
Engineering notation
2.1808508 × 10^6
Prime Factorization
2 × 2 × 223 × 23 × 1063
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
10904254
Product of the distinct prime numbers
The prime factorization of 21808508 is 2 × 2 × 223 × 23 × 1063.
Since it has a total of 5 prime factors.
6 , 1 , 14 , 99 , 474 , 333 , 344 , 3401 , 15325 , 8465 , 870732 , 813863 , 131929 , 1114346 , 13981060 , 82390052 , 254254271 , 298215036 , 3341079856 , 5030141988
n×2
43617016
n×3
65425524
n×4
87234032
n×5
109042540
n÷2
10904254
n÷3
7269502.6666667
n÷3
5452127
n÷5
4361701.6
n2
475611021186064
n3
1.0372366760424E+22
n4
2.2620584347365E+29
n5
4.9332119470419E+36
2 √n
4669.95802979
3 √n
279.38858081845
4 √n
68.337091171559
5 √n
29.3579138002
1 , 2 , 4 , 23 , 46 , 92 , 223 , 446 , 892 , 1063 , 2126 , 4252 , 5129 , 10258 , 20516 , 24449 , 48898 , 97796 , 237049 , 474098 , 948196 , 5452127 , 10904254 , 21808508
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21808507
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21808508 can be divided by 24 positive divisors.
The sum of these divisors (counting 21808508) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1010011001100010101111100
3
Ternary
1112000222122112
4
Quaternary
1103030111330
5
Quinary
21040333013
6
Senary
2055233152
8
Octal
123142574
10
Decimal
21808508
12
Duodecimal
73787b8
16
Hexadecimal
14cc57c
20
Vigesimal
6g6158
36
Base36
czfjw
md5
d85693e9b3edfb4a87befb5a50b7245e
sha1
0c76d2cb36cccd4f0d9c15dd4f1b1be2ab889f75
sha256
7a91c6173c6fc0e3f05237d7b6065f3a267704eb1ee0011552e26f9e56e31e19
sha512
ef226d1ba1b0a58c7e9133aaf06dca1a5611fa72c3be28b74fda7ab8a330f83de98ec4192ed183aba7f27f58688e9af6c88469cd00bc95a47c1ac5cbf686f95a
ripemd-160
e40b69653f8d025860517fc02d1738fa7948d9b1
Diameter
43617016
Circumference
137026897.03711
Area
1.4941760901245E+15
Volume
4.3447668286518E+22
Surface area
5.9767043604979E+15
Circumference
137026897.03711
Perimeter
87234032
Area
475611021186064
Diagonal
30841887.788722
Surface area
2853666127116384
Volume
1.0372366760424E+22
Space diagonal
37773443.893272
Perimeter
65425524
Area
2.059456133335E+14
Altitude
18886721.946636
Surface area
2.059456133335E+14
Volume
1.2223951455417E+21
Height
10280629.262907