21105853 is an odd 8-digits composite number following 21105852
and preceding 21105854 . In scientific notation, it is written as 2.1105853 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 21095548 positive integers (up to 21105853) that are relatively prime to 21105853.
21105853 has 4 divisors, whose sum is 21116160
The reverse of 21105853 is 35850112
Previous prime number is 2819
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million one hundred five thousand eight hundred fifty-three
Scientific notation
2.1105853 × 10^7
Engineering notation
2.1105853 × 10^6
Prime Factorization
2819 × 7487
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21105853
Product of the distinct prime numbers
The prime factorization of 21105853 is 2819 × 7487.
Since it has a total of 2 prime factors.
6 , 8 , 23 , 18 , 720 , 494 , 7928 , 4718 , 68010 , 54394 , 993156 , 289963 , 1711769 , 5356706 , 70044048 , 56151117 , 478006155 , 603401028 , 5034905496 , 8097275788
n×2
42211706
n×3
63317559
n×4
84423412
n×5
105529265
n÷2
10552926.5
n÷3
7035284.3333333
n÷3
5276463.25
n÷5
4221170.6
n2
445457030857609
n3
9.4017506110972E+21
n4
1.9843196634048E+29
n5
4.1880759120831E+36
2 √n
4594.1106865203
3 √n
276.35519713367
4 √n
67.779869330947
5 √n
29.166249177215
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
-21105852
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 21105853 can be divided by 4 positive divisors.
The sum of these divisors (counting 21105853) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100000110010111101
3
Ternary
1110201021210021
4
Quaternary
1100200302331
5
Quinary
20400341403
6
Senary
2032212141
8
Octal
120406275
10
Decimal
21105853
12
Duodecimal
709a051
16
Hexadecimal
1420cbd
20
Vigesimal
6bi4cd
36
Base36
ckddp
md5
067183936848627d7ade4b26ca7caa01
sha1
f2a14e7d7e77c7af5ed20119bc08152c224ece24
sha256
842d6d234e00236c2360d278697d2894c38824b619d10f668cac367450aaacee
sha512
ff01548e6e779202b91e3315727cf7eb4396c27531124bd495568cfe445720ba65766e79d5b07159ae96679186b58da6378b90c6864c7e6f9c8fea34d133b7fa
ripemd-160
fbb27ae1f1c11d7a063ffddb689891e2d16f1a3f
Diameter
42211706
Circumference
132611985.46509
Area
1.3994445356322E+15
Volume
3.9381960867608E+22
Surface area
5.5977781425287E+15
Circumference
132611985.46509
Perimeter
84423412
Area
445457030857609
Diagonal
29848183.558053
Surface area
2672742185145654
Volume
9.4017506110972E+21
Space diagonal
36556409.73308
Perimeter
63317559
Area
1.9288855250854E+14
Altitude
18278204.86654
Surface area
1.9288855250854E+14
Volume
1.1080069353553E+21
Height
9949394.519351