21090911 is an odd 8-digits composite number following 21090910
and preceding 21090912 . In scientific notation, it is written as 2.1090911 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 21056112 positive integers (up to 21090911) that are relatively prime to 21090911.
21090911 has 4 divisors, whose sum is 21125712
The reverse of 21090911 is 11909012
Previous prime number is 617
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million ninety thousand nine hundred eleven
Scientific notation
2.1090911 × 10^7
Engineering notation
2.1090911 × 10^6
Prime Factorization
617 × 34183
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21090911
Product of the distinct prime numbers
The prime factorization of 21090911 is 617 × 34183.
Since it has a total of 2 prime factors.
6 , 9 , 84 , 53 , 558 , 955 , 5197 , 9793 , 10619 , 61821 , 387471 , 967795 , 3952129 , 9643799 , 83563491 , 47807135 , 163093083 , 966280708 , 1925815264 , 2522536160
n×2
42181822
n×3
63272733
n×4
84363644
n×5
105454555
n÷2
10545455.5
n÷3
7030303.6666667
n÷3
5272727.75
n÷5
4218182.2
n2
444826526809921
n3
9.3817966873872E+21
n4
1.9787063895378E+29
n5
4.1732720356873E+36
2 √n
4592.4841861459
3 √n
276.289966031
4 √n
67.767869865784
5 √n
29.162118327265
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21090910
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21090911 can be divided by 4 positive divisors.
The sum of these divisors (counting 21090911) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011101001001011111
3
Ternary
1110200112021212
4
Quaternary
1100131021133
5
Quinary
20344402121
6
Senary
2032015035
8
Octal
120351137
10
Decimal
21090911
12
Duodecimal
709147b
16
Hexadecimal
141d25f
20
Vigesimal
6bg75b
36
Base36
ck1un
md5
55c9c4d24a9d9cf3386e95a837de9b3d
sha1
3c7430f60e1bb9ee6c4393e172204751c7038f43
sha256
ee743c197fd64cb097c6d517309029801db4a23f8c7e08c27646529b1054dccf
sha512
b24ecf9d37b8ccad112142e23036352a01cff90cabefe4b356accab4ddec3fc1cfec234798529200058b0c8c6bfb51e8e330ac5261c05b0748d29841687193be
ripemd-160
4579d420bc0ac78544f5cce1eb955c210d83f396
Diameter
42181822
Circumference
132518102.11023
Area
1.3974637487479E+15
Volume
3.9298378067425E+22
Surface area
5.5898549949916E+15
Circumference
132518102.11023
Perimeter
84363644
Area
444826526809921
Diagonal
29827052.379004
Surface area
2668959160859526
Volume
9.3817966873872E+21
Space diagonal
36530529.429913
Perimeter
63272733
Area
1.926155362473E+14
Altitude
18265264.714957
Surface area
1.926155362473E+14
Volume
1.1056553428942E+21
Height
9942350.7930013