21689917 is an odd 8-digits prime number following 21689916
and preceding 21689918 . In scientific notation, it is written as 2.1689917 × 10^7.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 21689916 positive integers (up to 21689917) that are relatively prime to 21689917.
21689917 has 2 divisors, whose sum is 21689918
The reverse of 21689917 is 71998612
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-one million six hundred eighty-nine thousand nine hundred seventeen
Scientific notation
2.1689917 × 10^7
Engineering notation
2.1689917 × 10^6
Prime Factorization
21689917
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21689917
Product of the distinct prime numbers
The prime factorization of 21689917 is 21689917.
Since it has a total of 1 prime factors.
4 , 4 , 57 , 68 , 19 , 520 , 81 , 3197 , 31397 , 47402 , 840500 , 381249 , 3529779 , 1437612 , 64670589 , 60642589 , 726631166 , 934617851 , 3079264991 , 6464969030
n×2
43379834
n×3
65069751
n×4
86759668
n×5
108449585
n÷2
10844958.5
n÷3
7229972.3333333
n÷3
5422479.25
n÷5
4337983.4
n2
470452499466889
n3
1.0204075665879E+22
n4
2.2132555425464E+29
n5
4.8005329017622E+36
2 √n
4657.2434980362
3 √n
278.88123737772
4 √n
68.243999721852
5 √n
29.325915443722
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21689918
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10844959
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4657.2436053958
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999077913
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21689917 can be divided by 2 positive divisors.
The sum of these divisors (counting 21689917) is 21689918, the average is 10844959.
Base
System
Value
2
Binary
1010010101111011000111101
3
Ternary
1111210221222021
4
Quaternary
1102233120331
5
Quinary
21023034132
6
Senary
2052520141
8
Octal
122573075
10
Decimal
21689917
12
Duodecimal
7320051
16
Hexadecimal
14af63d
20
Vigesimal
6fb4fh
36
Base36
cww1p
md5
1ab4d71d4dbec56f8f3d7401936669c9
sha1
04416f80f9fc5db9ebce9389c22b20024f3aed1e
sha256
5e4355d932c28ed36ed45453688c156001a2ebbf371fcb5184f2de8b99a2949f
sha512
a84270fe665409c21bea94383be99854dc0319eff6c6f939c21a24dc100665a61a8143f813404a14ec26cac77dbe14221cc6949604d49b1ad29581aada8e636c
ripemd-160
1f44a95e2eecd2d262010fcc3356b1dba88a4dbd
Diameter
43379834
Circumference
136281767.80834
Area
1.4779701161881E+15
Volume
4.2742732198135E+22
Surface area
5.9118804647525E+15
Circumference
136281767.80834
Perimeter
86759668
Area
470452499466889
Diagonal
30674174.788147
Surface area
2822714996801334
Volume
1.0204075665879E+22
Space diagonal
37568038.255952
Perimeter
65069751
Area
2.0371190790611E+14
Altitude
18784019.127976
Surface area
2.0371190790611E+14
Volume
1.2025618498473E+21
Height
10224724.929382