21297730 is an even 8-digits composite number following 21297729
and preceding 21297731 . In scientific notation, it is written as 2.1297730 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 8519088 positive integers (up to 21297730) that are relatively prime to 21297730.
21297730 has 8 divisors, whose sum is 38335932
The reverse of 21297730 is 03779212
Previous prime number is 5
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million two hundred ninety-seven thousand seven hundred thirty
Scientific notation
2.1297730 × 10^7
Engineering notation
2.1297730 × 10^6
Prime Factorization
2 × 5 × 2129773
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21297730
Product of the distinct prime numbers
The prime factorization of 21297730 is 2 × 5 × 2129773.
Since it has a total of 3 prime factors.
3 , 9 , 88 , 74 , 259 , 345 , 825 , 101 , 36713 , 22291 , 288148 , 985136 , 1291813 , 9851309 , 7692206 , 28117418 , 117128321 , 379022252 , 7282157185 , 1159316975
n×2
42595460
n×3
63893190
n×4
85190920
n×5
106488650
n÷2
10648865
n÷3
7099243.3333333
n÷3
5324432.5
n÷5
4259546
n2
453593303152900
n3
9.6605077003586E+21
n4
2.0574688466516E+29
n5
4.3819415979397E+36
2 √n
4614.9463702193
3 √n
277.19013650165
4 √n
67.933396575022
5 √n
29.219088470708
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
-21297729
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 21297730 can be divided by 8 positive divisors.
The sum of these divisors (counting 21297730) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001111101001000010
3
Ternary
1111002000222211
4
Quaternary
1101033221002
5
Quinary
20423011410
6
Senary
2040252334
8
Octal
121175102
10
Decimal
21297730
12
Duodecimal
71710aa
16
Hexadecimal
144fa42
20
Vigesimal
6d246a
36
Base36
cohfm
md5
db1d2294172240027c1f13ccac9c4cec
sha1
77a9ec339d2a8cb19afca8ae80069ce0bb60f4e6
sha256
40d944d73222dba8830bdf3ff0795360b088228ef3fa3b22414eedea712aac63
sha512
d3fd56478d0dee517342bfdae3f03d4333361c6fe815ce54370fbc67b71c63d44583e281a709a735de5de16c23a55404b84278ec2e3965caa55b0a56677b9c66
ripemd-160
01ae62ad5e2a54ae2a74d28756ad241882b5e913
Diameter
42595460
Circumference
133817584.21228
Area
1.4250053889027E+15
Volume
4.0465840028526E+22
Surface area
5.7000215556107E+15
Circumference
133817584.21228
Perimeter
85190920
Area
453593303152900
Diagonal
30119538.61376
Surface area
2721559818917400
Volume
9.6605077003586E+21
Space diagonal
36888750.445884
Perimeter
63893190
Area
1.9641166175845E+14
Altitude
18444375.222942
Surface area
1.9641166175845E+14
Volume
1.1385017507714E+21
Height
10039846.204587