20121247 is an odd 8-digits composite number following 20121246
and preceding 20121248 . In scientific notation, it is written as 2.0121247 × 10^7.
The sum of its digits is 19. It has a total of 3 prime factors and 8 positive divisors.
There are 19021464 positive integers (up to 20121247) that are relatively prime to 20121247.
20121247 has 8 divisors, whose sum is 21225600
The reverse of 20121247 is 74212102
Previous prime number is 659
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty million one hundred twenty-one thousand two hundred forty-seven
Scientific notation
2.0121247 × 10^7
Engineering notation
2.0121247 × 10^6
Prime Factorization
19 × 659 × 1607
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20121247
Product of the distinct prime numbers
The prime factorization of 20121247 is 19 × 659 × 1607.
Since it has a total of 3 prime factors.
8 , 5 , 29 , 35 , 305 , 280 , 268 , 1206 , 85110 , 18908 , 743649 , 719111 , 1008750 , 4628320 , 15073524 , 29655771 , 175406144 , 659982616 , 2754399484 , 7909399630
n×2
40242494
n×3
60363741
n×4
80484988
n×5
100606235
n÷2
10060623.5
n÷3
6707082.3333333
n÷3
5030311.75
n÷5
4024249.4
n2
404864580835009
n3
8.1463802325327E+21
n4
1.6391532881471E+29
n5
3.2981808181669E+36
2 √n
4485.6712987021
3 √n
271.98918191548
4 √n
66.97515433877
5 √n
28.888898196948
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
-20121246
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 20121247 can be divided by 8 positive divisors.
The sum of these divisors (counting 20121247) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100110000011010011111
3
Ternary
1101212021011101
4
Quaternary
1030300122133
5
Quinary
20122334442
6
Senary
1555133531
8
Octal
114603237
10
Decimal
20121247
12
Duodecimal
68a42a7
16
Hexadecimal
133069f
20
Vigesimal
65f327
36
Base36
bz9nj
md5
13c3b5428a1a860d96f12944566712b4
sha1
abd8b975709217b58f1459594fd1614806b8a420
sha256
89f591edd44a544c6fe534de598fbef741dfa4f4e0741eba095e0a3ee2e32ebe
sha512
a5f87091d20c6fdd901b520f4b8b364b2d6832257eb88767ebdae446f8d9678a2fbae2bf56ff37a3a1faca9650c94b81eb8113817a42951c8a9fc2b5cdc77933
ripemd-160
43e5e19b7d44d0eac7820b6b96cdd68fd6993a1f
Diameter
40242494
Circumference
126425523.51253
Area
1.27191959285E+15
Volume
3.4123477722498E+22
Surface area
5.0876783713999E+15
Circumference
126425523.51253
Perimeter
80484988
Area
404864580835009
Diagonal
28455740.399259
Surface area
2429187485010054
Volume
8.1463802325327E+21
Space diagonal
34851022.115643
Perimeter
60363741
Area
1.7531150604783E+14
Altitude
17425511.057821
Surface area
1.7531150604783E+14
Volume
9.6006011742465E+20
Height
9485246.799753