21870906 is an even 8-digits composite number following 21870905
and preceding 21870907 . In scientific notation, it is written as 2.1870906 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 7290300 positive integers (up to 21870906) that are relatively prime to 21870906.
21870906 has 8 divisors, whose sum is 43741824
The reverse of 21870906 is 60907812
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million eight hundred seventy thousand nine hundred six
Scientific notation
2.1870906 × 10^7
Engineering notation
2.1870906 × 10^6
Prime Factorization
2 × 3 × 3645151
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21870906
Product of the distinct prime numbers
The prime factorization of 21870906 is 2 × 3 × 3645151.
Since it has a total of 3 prime factors.
9 , 9 , 28 , 76 , 363 , 186 , 5254 , 7061 , 70130 , 77444 , 42437 , 986621 , 7031619 , 1225393 , 24267155 , 74270801 , 398311547 , 687940169 , 3545849532 , 3555276452
n×2
43741812
n×3
65612718
n×4
87483624
n×5
109354530
n÷2
10935453
n÷3
7290302
n÷3
5467726.5
n÷5
4374181.2
n2
478336529260836
n3
1.046165326783E+22
n4
2.288058352253E+29
n5
5.0041909144641E+36
2 √n
4676.6340459779
3 √n
279.65478714597
4 √n
68.385919939546
5 √n
29.374694243591
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
-21870905
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 21870906 can be divided by 8 positive divisors.
The sum of these divisors (counting 21870906) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011011011100100111010
3
Ternary
1112011011020120
4
Quaternary
1103123210322
5
Quinary
21044332111
6
Senary
2100434110
8
Octal
123334472
10
Decimal
21870906
12
Duodecimal
73a8936
16
Hexadecimal
14db93a
20
Vigesimal
6gdh56
36
Base36
d0rp6
md5
555d16c64fcc51475028d0de682975bf
sha1
85f089faf689f919b7f7a4952b1babe22d78fbe3
sha256
6b8884fc9f1f0edf67ec048f8abcd09c18de984af4253f465818b84031133bef
sha512
14c5b63ab00a2d93e8684d25fe7c1e3a1dc13c76065aed1868a5f7d5deebdbcc1231d5b2fb8d5210767fe22085788037e5e5f8915c79a75424d19227969e18b6
ripemd-160
e2824f097987b885900a130be9062bfa9bd36adf
Diameter
43741812
Circumference
137418955.23391
Area
1.5027385262695E+15
Volume
4.3821670734158E+22
Surface area
6.0109541050779E+15
Circumference
137418955.23391
Perimeter
87483624
Area
478336529260836
Diagonal
30930131.886587
Surface area
2870019175565016
Volume
1.046165326783E+22
Space diagonal
37881520.399563
Perimeter
65612718
Area
2.0712579294898E+14
Altitude
18940760.199781
Surface area
2.0712579294898E+14
Volume
1.2329176613508E+21
Height
10310043.962196