21390911 is an odd 8-digits prime number following 21390910
and preceding 21390912 . In scientific notation, it is written as 2.1390911 × 10^7.
The sum of its digits is 26. It has a total of 1 prime factors and 2 positive divisors.
There are 21390910 positive integers (up to 21390911) that are relatively prime to 21390911.
21390911 has 2 divisors, whose sum is 21390912
The reverse of 21390911 is 11909312
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty-one million three hundred ninety thousand nine hundred eleven
Scientific notation
2.1390911 × 10^7
Engineering notation
2.1390911 × 10^6
Prime Factorization
21390911
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21390911
Product of the distinct prime numbers
The prime factorization of 21390911 is 21390911.
Since it has a total of 1 prime factors.
7 , 3 , 25 , 18 , 276 , 635 , 4890 , 3726 , 628 , 1722 , 558377 , 514896 , 8706975 , 2124997 , 74813906 , 25405326 , 705210229 , 454881436 , 1838015871 , 6551910681
n×2
42781822
n×3
64172733
n×4
85563644
n×5
106954555
n÷2
10695455.5
n÷3
7130303.6666667
n÷3
5347727.75
n÷5
4278182.2
n2
457571073409921
n3
9.7878621074861E+21
n4
2.0937128722151E+29
n5
4.4786425709107E+36
2 √n
4625.0309188156
3 √n
277.59379887844
4 √n
68.00757986295
5 √n
29.244611486686
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21390912
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10695456
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4625.031026923
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999065024
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21390911 can be divided by 2 positive divisors.
The sum of these divisors (counting 21390911) is 21390912, the average is 10695456.
Base
System
Value
2
Binary
1010001100110011000111111
3
Ternary
1111020202210222
4
Quaternary
1101212120333
5
Quinary
20434002121
6
Senary
2042251555
8
Octal
121463077
10
Decimal
21390911
12
Duodecimal
71b6bbb
16
Hexadecimal
146663f
20
Vigesimal
6ddh5b
36
Base36
cqhbz
md5
d666ca0f3f8e87ad2fac32a6e6a579f7
sha1
fabc001d9ffc43001c5947dd3c47b32d09b7c837
sha256
d53a3bb0b3890515f0662e43ea83d8589542cbf3813dbf137acdd9b6a310fea4
sha512
78cf66ec2cf96a464219b0b1db5dbad11cf6a6b9f7b87cb80342814ff95f9f1307b99d0c467f0dfae5b711ae17cb0703d97dcd94192603a0875a142fa68c4151
ripemd-160
ad473890055169a1623083d333faf48c76ed1d33
Diameter
42781822
Circumference
134403057.70239
Area
1.4375019227198E+15
Volume
4.0999300921638E+22
Surface area
5.7500076908792E+15
Circumference
134403057.70239
Perimeter
85563644
Area
457571073409921
Diagonal
30251316.447716
Surface area
2745426440459526
Volume
9.7878621074861E+21
Space diagonal
37050144.672184
Perimeter
64172733
Area
1.9813408680495E+14
Altitude
18525072.336092
Surface area
1.9813408680495E+14
Volume
1.153510611587E+21
Height
10083772.149239