21861517 is an odd 8-digits prime number following 21861516
and preceding 21861518 . In scientific notation, it is written as 2.1861517 × 10^7.
The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors.
There are 21861516 positive integers (up to 21861517) that are relatively prime to 21861517.
21861517 has 2 divisors, whose sum is 21861518
The reverse of 21861517 is 71516812
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 eight hundred sixty-one thousand five hundred seventeen
Scientific notation
2.1861517 × 10^7
Engineering notation
2.1861517 × 10^6
Prime Factorization
21861517
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21861517
Product of the distinct prime numbers
The prime factorization of 21861517 is 21861517.
Since it has a total of 1 prime factors.
3 , 1 , 49 , 98 , 725 , 344 , 2329 , 10 , 16528 , 83272 , 677879 , 68941 , 1461071 , 8969796 , 4305790 , 62341703 , 612709658 , 437608125 , 7193831091 , 5371488272
n×2
43723034
n×3
65584551
n×4
87446068
n×5
109307585
n÷2
10930758.5
n÷3
7287172.3333333
n÷3
5465379.25
n÷5
4372303.4
n2
477925925541289
n3
1.0448185745962E+22
n4
2.284131903045E+29
n5
4.993458842866E+36
2 √n
4675.6301179627
3 √n
279.61476358508
4 √n
68.37857937953
5 √n
29.372171747488
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21861518
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10930759
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4675.6302249002
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999999908515
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21861517 can be divided by 2 positive divisors.
The sum of these divisors (counting 21861517) is 21861518, the average is 10930759.
Base
System
Value
2
Binary
1010011011001010010001101
3
Ternary
1112010200100211
4
Quaternary
1103121102031
5
Quinary
21044032032
6
Senary
2100322421
8
Octal
123312215
10
Decimal
21861517
12
Duodecimal
73a3411
16
Hexadecimal
14d948d
20
Vigesimal
6gcdfh
36
Base36
d0kgd
md5
f9e490c6c4f0f18d530d3559a9e80324
sha1
37bbc4875a864b22e095905a0c1e81d38d9b7b2e
sha256
43dc3442c58f868fe902c0205014034e3ca0a1b3040c24033b520e3911c6b3ec
sha512
4fb5a1b28db1352bcf46a3c0f9a4a47655b8d0b9c5626e041b684242921930b85254736f38a41fe763ce7c216b9294b475781fa8b55ed61719df29e796010ec2
ripemd-160
7e1e12c09230b57ee1ede7b40e0cbdd7d8383612
Diameter
43723034
Circumference
137359962.40706
Area
1.5014485766406E+15
Volume
4.3765258110473E+22
Surface area
6.0057943065625E+15
Circumference
137359962.40706
Perimeter
87446068
Area
477925925541289
Diagonal
30916853.83545
Surface area
2867555553247734
Volume
1.0448185745962E+22
Space diagonal
37865258.174531
Perimeter
65584551
Area
2.0694799632297E+14
Altitude
18932629.087265
Surface area
2.0694799632297E+14
Volume
1.2313304986777E+21
Height
10305617.94515