21493651 is an odd 8-digits composite number following 21493650
and preceding 21493652 . In scientific notation, it is written as 2.1493651 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 21454912 positive integers (up to 21493651) that are relatively prime to 21493651.
21493651 has 4 divisors, whose sum is 21532392
The reverse of 21493651 is 15639412
Previous prime number is 563
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million four hundred ninety-three thousand six hundred fifty-one
Scientific notation
2.1493651 × 10^7
Engineering notation
2.1493651 × 10^6
Prime Factorization
563 × 38177
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21493651
Product of the distinct prime numbers
The prime factorization of 21493651 is 563 × 38177.
Since it has a total of 2 prime factors.
6 , 8 , 100 , 51 , 13 , 108 , 4790 , 2823 , 80966 , 66888 , 358451 , 353219 , 2249126 , 7359241 , 74667428 , 63173425 , 53049475 , 614427549 , 2854814597 , 188741835
n×2
42987302
n×3
64480953
n×4
85974604
n×5
107468255
n÷2
10746825.5
n÷3
7164550.3333333
n÷3
5373412.75
n÷5
4298730.2
n2
461977033309801
n3
9.9295731239762E+21
n4
2.1342277930572E+29
n5
4.5872347338473E+36
2 √n
4636.1245669201
3 √n
278.03751456198
4 √n
68.089092863102
5 √n
29.27264989583
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
-21493650
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 21493651 can be divided by 4 positive divisors.
The sum of these divisors (counting 21493651) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001111111011110010011
3
Ternary
1111102222202011
4
Quaternary
1101333132103
5
Quinary
21000244101
6
Senary
2044403351
8
Octal
121773623
10
Decimal
21493651
12
Duodecimal
7246557
16
Hexadecimal
147f793
20
Vigesimal
6e6e2b
36
Base36
csolv
md5
344da372fb8ba3589f677880b04f2f6a
sha1
5f72c5ca62e7468745e668bce471648a6f5c38f5
sha256
fa183128423eb792dd2da754f242a1009ab14effa888a65629f4e71f3355d995
sha512
dbafd8e842d60b15f7ad52f4f1bdc33b18111bd523f028955ca0b2601ae93de9e302e2950853305362ffc1c8ee0195763623a1be2eef866a260ae744ccd0d698
ripemd-160
ba3de44b57096bc2ab278c54763935511b84944b
Diameter
42987302
Circumference
135048592.16085
Area
1.4513436539733E+15
Volume
4.1592898639422E+22
Surface area
5.8053746158931E+15
Circumference
135048592.16085
Perimeter
85974604
Area
461977033309801
Diagonal
30396612.749114
Surface area
2771862199858806
Volume
9.9295731239762E+21
Space diagonal
37228095.572154
Perimeter
64480953
Area
2.0004192340563E+14
Altitude
18614047.786077
Surface area
2.0004192340563E+14
Volume
1.1702114150419E+21
Height
10132204.249705