21001481 is an odd 8-digits composite number following 21001480
and preceding 21001482 . In scientific notation, it is written as 2.1001481 × 10^7.
The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors.
There are 20209168 positive integers (up to 21001481) that are relatively prime to 21001481.
21001481 has 8 divisors, whose sum is 21798720
The reverse of 21001481 is 18410012
Previous prime number is 347
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 17
Digital Root 8
Name
twenty-one million one thousand four hundred eighty-one
Scientific notation
2.1001481 × 10^7
Engineering notation
2.1001481 × 10^6
Prime Factorization
29 × 347 × 2087
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21001481
Product of the distinct prime numbers
The prime factorization of 21001481 is 29 × 347 × 2087.
Since it has a total of 3 prime factors.
4 , 4 , 65 , 99 , 288 , 849 , 8203 , 4066 , 72695 , 39474 , 311512 , 250031 , 1476538 , 1476984 , 98555632 , 80748076 , 576569843 , 50695566 , 8232445161 , 7819571975
n×2
42002962
n×3
63004443
n×4
84005924
n×5
105007405
n÷2
10500740.5
n÷3
7000493.6666667
n÷3
5250370.25
n÷5
4200296.2
n2
441062204193361
n3
9.262959501185E+21
n4
1.9453586796791E+29
n5
4.0855413349465E+36
2 √n
4582.7372824547
3 √n
275.89890314709
4 √n
67.695917768021
5 √n
29.137345543694
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
-21001480
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 21001481 can be divided by 8 positive divisors.
The sum of these divisors (counting 21001481) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000111010100001001
3
Ternary
1110111222121122
4
Quaternary
1100013110021
5
Quinary
20334021411
6
Senary
2030045025
8
Octal
120072411
10
Decimal
21001481
12
Duodecimal
7049775
16
Hexadecimal
1407509
20
Vigesimal
6b53e1
36
Base36
ci4uh
md5
bc8b9d571288e495670abb90c0edecd8
sha1
d3bf2d19d6e864802cff9f6ebd98035c729e9f24
sha256
b4cc4370b36054378a29d249eb344e1a926dd6c362cdadfb8967842d62b27623
sha512
1fb9b7983e7f84adabeac384c9bfda51b61d3d916ef06fedfff6452e2c3c1c53db1a4aeb23335e5f8e8c14fbf07202524bd7b16ceb83b93d528a69c1c775acad
ripemd-160
ecc241b08f3f1769414638f2260fd1645cff7f6e
Diameter
42002962
Circumference
131956196.84821
Area
1.38563778047E+15
Volume
3.8800594025897E+22
Surface area
5.5425511218799E+15
Circumference
131956196.84821
Perimeter
84005924
Area
441062204193361
Diagonal
29700579.260121
Surface area
2646373225160166
Volume
9.262959501185E+21
Space diagonal
36375632.126192
Perimeter
63004443
Area
1.909855367403E+14
Altitude
18187816.063096
Surface area
1.909855367403E+14
Volume
1.0916502461907E+21
Height
9900193.086707