21006087 is an odd 8-digits composite number following 21006086
and preceding 21006088 . In scientific notation, it is written as 2.1006087 × 10^7.
The sum of its digits is 24. It has a total of 2 prime factors and 4 positive divisors.
There are 14004056 positive integers (up to 21006087) that are relatively prime to 21006087.
21006087 has 4 divisors, whose sum is 28008120
The reverse of 21006087 is 78060012
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million six thousand eighty-seven
Scientific notation
2.1006087 × 10^7
Engineering notation
2.1006087 × 10^6
Prime Factorization
3 × 7002029
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21006087
Product of the distinct prime numbers
The prime factorization of 21006087 is 3 × 7002029.
Since it has a total of 2 prime factors.
1 , 6 , 58 , 22 , 283 , 804 , 1332 , 790 , 20226 , 49552 , 320117 , 442485 , 5986388 , 9862963 , 23201453 , 9027341 , 541803234 , 463354404 , 2629239139 , 2338961122
n×2
42012174
n×3
63018261
n×4
84024348
n×5
105030435
n÷2
10503043.5
n÷3
7002029
n÷3
5251521.75
n÷5
4201217.4
n2
441255691051569
n3
9.2690554354744E+21
n4
1.947065848854E+29
n5
4.0900234615755E+36
2 √n
4583.2397929849
3 √n
275.91907152564
4 √n
67.699629193851
5 √n
29.138623499678
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
-21006086
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 21006087 can be divided by 4 positive divisors.
The sum of these divisors (counting 21006087) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001000011100000111
3
Ternary
1110112012221020
4
Quaternary
1100020130013
5
Quinary
20334143322
6
Senary
2030122223
8
Octal
120103407
10
Decimal
21006087
12
Duodecimal
7050373
16
Hexadecimal
1408707
20
Vigesimal
6b5f47
36
Base36
ci8ef
md5
b1a4d45fd0348b4c07cfbed80764388e
sha1
7d04652b4c27e45aff8aacbb2a92046250db9fbe
sha256
a0df0c298e321e35b53947454031f4362165d2472905b2c71fd2e501b66b6580
sha512
234a74d6200bf05373d6697d00495e9cfaaf26df807616d0545f40add055b25a679e9397127b5552fee9db454d9546fec4ec81226957aaa23ea344ad8f394cd4
ripemd-160
71960ba62a8a64392279ea9609e92a7895349352
Diameter
42012174
Circumference
131985137.19974
Area
1.3862456373623E+15
Volume
3.8826128615737E+22
Surface area
5.5449825494492E+15
Circumference
131985137.19974
Perimeter
84024348
Area
441255691051569
Diagonal
29707093.127789
Surface area
2647534146309414
Volume
9.2690554354744E+21
Space diagonal
36383609.952212
Perimeter
63018261
Area
1.9106931900756E+14
Altitude
18191804.976106
Surface area
1.9106931900756E+14
Volume
1.0923686589363E+21
Height
9902364.3759297