21090919 is an odd 8-digits prime number following 21090918
and preceding 21090920 . In scientific notation, it is written as 2.1090919 × 10^7.
The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors.
There are 21090918 positive integers (up to 21090919) that are relatively prime to 21090919.
21090919 has 2 divisors, whose sum is 21090920
The reverse of 21090919 is 91909012
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million ninety thousand nine hundred nineteen
Scientific notation
2.1090919 × 10^7
Engineering notation
2.1090919 × 10^6
Prime Factorization
21090919
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21090919
Product of the distinct prime numbers
The prime factorization of 21090919 is 21090919.
Since it has a total of 1 prime factors.
10 , 8 , 27 , 83 , 540 , 966 , 98 , 7415 , 29133 , 92229 , 969014 , 616030 , 1993269 , 5574790 , 4507861 , 4729003 , 762337342 , 472454732 , 7920296781 , 7252503032
n×2
42181838
n×3
63272757
n×4
84363676
n×5
105454595
n÷2
10545459.5
n÷3
7030306.3333333
n÷3
5272729.75
n÷5
4218183.8
n2
444826864264561
n3
9.3818073632279E+21
n4
1.9787093917144E+29
n5
4.1732799505188E+36
2 √n
4592.4850571341
3 √n
276.2900009642
4 √n
67.767876292046
5 √n
29.162120539564
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21090920
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10545460
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4592.4851660076
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999051725
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21090919 can be divided by 2 positive divisors.
The sum of these divisors (counting 21090919) is 21090920, the average is 10545460.
Base
System
Value
2
Binary
1010000011101001001100111
3
Ternary
1110200112022011
4
Quaternary
1100131021213
5
Quinary
20344402134
6
Senary
2032015051
8
Octal
120351147
10
Decimal
21090919
12
Duodecimal
7091487
16
Hexadecimal
141d267
20
Vigesimal
6bg75j
36
Base36
ck1uv
md5
ea08593370a93bb1af5d959189e80b8e
sha1
22a44fada463850ad825bbd34263c0dd8e682d16
sha256
f875ad18193ee053d6641275fccb254371b936578bfb77ff8e305de2d2c7d5c4
sha512
420084f6792e3df3403e6e2e8e94fb04fb4c3c0db047f48cfe76a9209b94e73cc09fe937861017495b4ed24ad5f3a108a3ee2f4af994ce5ac572ebf194268791
ripemd-160
9793935443aacd2f98a14a88ad6bc8cdac93f686
Diameter
42181838
Circumference
132518152.37571
Area
1.3974648088929E+15
Volume
3.9298422786282E+22
Surface area
5.5898592355717E+15
Circumference
132518152.37571
Perimeter
84363676
Area
444826864264561
Diagonal
29827063.692712
Surface area
2668961185587366
Volume
9.3818073632279E+21
Space diagonal
36530543.28632
Perimeter
63272757
Area
1.9261568236944E+14
Altitude
18265271.64316
Surface area
1.9261568236944E+14
Volume
1.105656601054E+21
Height
9942354.5642375