21291217 is an odd 8-digits prime number following 21291216
and preceding 21291218 . In scientific notation, it is written as 2.1291217 × 10^7.
The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors.
There are 21291216 positive integers (up to 21291217) that are relatively prime to 21291217.
21291217 has 2 divisors, whose sum is 21291218
The reverse of 21291217 is 71219212
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million two hundred ninety-one thousand two hundred seventeen
Scientific notation
2.1291217 × 10^7
Engineering notation
2.1291217 × 10^6
Prime Factorization
21291217
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21291217
Product of the distinct prime numbers
The prime factorization of 21291217 is 21291217.
Since it has a total of 1 prime factors.
8 , 1 , 64 , 18 , 785 , 264 , 9634 , 4951 , 97017 , 85345 , 519235 , 956043 , 9620799 , 3221693 , 49433747 , 65093255 , 282066308 , 14012994 , 1528709171 , 2681940633
n×2
42582434
n×3
63873651
n×4
85164868
n×5
106456085
n÷2
10645608.5
n÷3
7097072.3333333
n÷3
5322804.25
n÷5
4258243.4
n2
453315921341089
n3
9.6516476508281E+21
n4
2.0549532454132E+29
n5
4.3752455472947E+36
2 √n
4614.2406742605
3 √n
277.16187803751
4 √n
67.928202348218
5 √n
29.217301170314
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21291218
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10645609
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4614.2407826207
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999060646
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21291217 can be divided by 2 positive divisors.
The sum of these divisors (counting 21291217) is 21291218, the average is 10645609.
Base
System
Value
2
Binary
1010001001110000011010001
3
Ternary
1111001201001121
4
Quaternary
1101032003101
5
Quinary
20422304332
6
Senary
2040202241
8
Octal
121160321
10
Decimal
21291217
12
Duodecimal
7169381
16
Hexadecimal
144e0d1
20
Vigesimal
6d180h
36
Base36
cocep
md5
5963e2d7be73803a95a4a1dba2b70716
sha1
9a090979972743859be136efffcc3e03a9ddd98b
sha256
15da874f445c1ee0c142b359fd80d358a62d1684f6fdf0d359952f83bbf9a553
sha512
fbce83776bef13a0d63492562e6ba402ee1c4b10de7e9c1cb151df397e529428d3e444bf85dd1a444b157dce23912e21f70ae3c9f9ca2b2a04681f696382215a
ripemd-160
68ae015f6b07234def9eeca323b9240b478269b7
Diameter
42582434
Circumference
133776661.82637
Area
1.4241339682405E+15
Volume
4.0428727139838E+22
Surface area
5.6965358729618E+15
Circumference
133776661.82637
Perimeter
85164868
Area
453315921341089
Diagonal
30110327.840829
Surface area
2719895528046534
Volume
9.6516476508281E+21
Space diagonal
36877469.598974
Perimeter
63873651
Area
1.9629155191067E+14
Altitude
18438734.799487
Surface area
1.9629155191067E+14
Volume
1.1374575839206E+21
Height
10036775.946943