21371908 is an even 8-digits composite number following 21371907
and preceding 21371909 . In scientific notation, it is written as 2.1371908 × 10^7.
The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors.
There are 10620072 positive integers (up to 21371908) that are relatively prime to 21371908.
21371908 has 12 divisors, whose sum is 37631440
The reverse of 21371908 is 80917312
Previous prime number is 163
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million three hundred seventy-one thousand nine hundred eight
Scientific notation
2.1371908 × 10^7
Engineering notation
2.1371908 × 10^6
Prime Factorization
2 × 2 × 163 × 32779
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10685954
Product of the distinct prime numbers
The prime factorization of 21371908 is 2 × 2 × 163 × 32779.
Since it has a total of 4 prime factors.
2 , 7 , 38 , 60 , 231 , 77 , 2675 , 5971 , 22314 , 27225 , 148027 , 232254 , 6604531 , 4948349 , 63212258 , 60802204 , 765620779 , 333733140 , 5221244786 , 6237157822
n×2
42743816
n×3
64115724
n×4
85487632
n×5
106859540
n÷2
10685954
n÷3
7123969.3333333
n÷3
5342977
n÷5
4274381.6
n2
456758451560464
n3
9.7617996049727E+21
n4
2.0862828307191E+29
n5
4.4587844720109E+36
2 √n
4622.9760977102
3 √n
277.51157271219
4 √n
67.992470889873
5 √n
29.239413644141
1 , 2 , 4 , 163 , 326 , 652 , 32779 , 65558 , 131116 , 5342977 , 10685954 , 21371908
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
-21371907
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 21371908 can be divided by 12 positive divisors.
The sum of these divisors (counting 21371908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010001100001110000000100
3
Ternary
1111012210202011
4
Quaternary
1101201300010
5
Quinary
20432400113
6
Senary
2042024004
8
Octal
121416004
10
Decimal
21371908
12
Duodecimal
71a8004
16
Hexadecimal
1461c04
20
Vigesimal
6db9f8
36
Base36
cq2o4
md5
e42365d805d258f25f306145fb4c9a8f
sha1
9060393794bc9974d445dd92de05cbee466148f6
sha256
be67f13a59be50fe794eac8a444811a9267148f826a50e290145cb408366012e
sha512
b108cc5ba1f540f87e05eb9e1d1fc78e313e3c39325d2d488f37d4abc410e8ae4f19f2cae6bfd452e8e841808dfc356cc64015c24cc1ca1591211ce816a8a8f3
ripemd-160
0a5ffef6fc7817e30b109cb1421bb6d9525b6dbe
Diameter
42743816
Circumference
134283658.33199
Area
1.4349489958874E+15
Volume
4.0890130566397E+22
Surface area
5.7397959835496E+15
Circumference
134283658.33199
Perimeter
85487632
Area
456758451560464
Diagonal
30224442.14739
Surface area
2740550709362784
Volume
9.7617996049727E+21
Space diagonal
37017230.510688
Perimeter
64115724
Area
1.977822112223E+14
Altitude
18508615.255344
Surface area
1.977822112223E+14
Volume
1.1504391162101E+21
Height
10074814.04913