21609986 is an even 8-digits composite number following 21609985
and preceding 21609987 . In scientific notation, it is written as 2.1609986 × 10^7.
The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors.
There are 10652740 positive integers (up to 21609986) that are relatively prime to 21609986.
21609986 has 8 divisors, whose sum is 32871744
The reverse of 21609986 is 68990612
Previous prime number is 71
Is Prime? no
Number parity even
Number length 8
Sum of Digits 41
Digital Root 5
Name
twenty-one million six hundred nine thousand nine hundred eighty-six
Scientific notation
2.1609986 × 10^7
Engineering notation
2.1609986 × 10^6
Prime Factorization
2 × 71 × 152183
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21609986
Product of the distinct prime numbers
The prime factorization of 21609986 is 2 × 71 × 152183.
Since it has a total of 3 prime factors.
1 , 1 , 62 , 46 , 588 , 881 , 4040 , 4734 , 62217 , 93727 , 519247 , 237159 , 7243688 , 2700623 , 47620281 , 62719546 , 72888358 , 162100031 , 178779390 , 8609509169
n×2
43219972
n×3
64829958
n×4
86439944
n×5
108049930
n÷2
10804993
n÷3
7203328.6666667
n÷3
5402496.5
n÷5
4321997.2
n2
466991494920196
n3
1.0091679667345E+22
n4
2.180810563278E+29
n5
4.712728574109E+36
2 √n
4648.6542138559
3 √n
278.53824091031
4 √n
68.181039988078
5 √n
29.304269324057
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
-21609985
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 21609986 can be divided by 8 positive divisors.
The sum of these divisors (counting 21609986) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010011011111000000010
3
Ternary
1111122220022212
4
Quaternary
1102123320002
5
Quinary
21013004421
6
Senary
2051102122
8
Octal
122337002
10
Decimal
21609986
12
Duodecimal
72a1942
16
Hexadecimal
149be02
20
Vigesimal
6f14j6
36
Base36
cv6de
md5
495e5b29a1e7053eb0fe82d27fe7a5c6
sha1
57e1ceb506ff4d98c7cbad8dc458307db79683f6
sha256
9c08106ce7e91386ddc637e9fddf039b92a9ba4f220c7706e04c666bd9fc4d4e
sha512
c692fccf3678f9bb5f21614a90c8f8189ac4d895bbe04afa46359970d09261ebf0ef74464bd36cbee50c0b3287915b90ca49b117be4edc38df60e1fb47e09e6e
ripemd-160
9b512fdaded47fd56974a0b2b0aff39199dbfec0
Diameter
43219972
Circumference
135779546.52356
Area
1.4670970497302E+15
Volume
4.2271928940415E+22
Surface area
5.8683881989208E+15
Circumference
135779546.52356
Perimeter
86439944
Area
466991494920196
Diagonal
30561135.283893
Surface area
2801948969521176
Volume
1.0091679667345E+22
Space diagonal
37429593.702852
Perimeter
64829958
Area
2.0221324897608E+14
Altitude
18714796.851426
Surface area
2.0221324897608E+14
Volume
1.1893158543903E+21
Height
10187045.094631