20691247 is an odd 8-digits composite number following 20691246
and preceding 20691248 . In scientific notation, it is written as 2.0691247 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 19456704 positive integers (up to 20691247) that are relatively prime to 20691247.
20691247 has 8 divisors, whose sum is 21942000
The reverse of 20691247 is 74219602
Previous prime number is 137
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million six hundred ninety-one thousand two hundred forty-seven
Scientific notation
2.0691247 × 10^7
Engineering notation
2.0691247 × 10^6
Prime Factorization
19 × 137 × 7949
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20691247
Product of the distinct prime numbers
The prime factorization of 20691247 is 19 × 137 × 7949.
Since it has a total of 3 prime factors.
7 , 2 , 46 , 22 , 817 , 281 , 8581 , 5539 , 84676 , 40293 , 18495 , 32328 , 3533240 , 3330727 , 71441523 , 55021311 , 542433422 , 638344219 , 3911615042 , 5953412407
n×2
41382494
n×3
62073741
n×4
82764988
n×5
103456235
n÷2
10345623.5
n÷3
6897082.3333333
n÷3
5172811.75
n÷5
4138249.4
n2
428127702415009
n3
8.8584960382114E+21
n4
1.8329332957515E+29
n5
3.7925675556919E+36
2 √n
4548.7632385078
3 √n
274.53363157837
4 √n
67.444519706999
5 √n
29.050748930727
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
-20691246
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 20691247 can be divided by 8 positive divisors.
The sum of these divisors (counting 20691247) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110111011100100101111
3
Ternary
1102221020001111
4
Quaternary
1032323210233
5
Quinary
20244104442
6
Senary
2015252451
8
Octal
116734457
10
Decimal
20691247
12
Duodecimal
6b1a127
16
Hexadecimal
13bb92f
20
Vigesimal
696827
36
Base36
cbhgv
md5
4f5eb390f607bee94c13bd5f86851957
sha1
c222438a9390a98a19a1d1856b783d627699403e
sha256
3356c7a59fca32fab5cd685de7da2e294f64b9a986d2bcfabe35ae3480a137c3
sha512
53108c4cab79ca93b01c249e9a16250c18a8d8eeed44a60000f04ea5937fa7263c3d48d3591e10960f1a0562750ac8d5679050cac359c46691e495c5c98a839f
ripemd-160
a95850a986583b7acf9c43c351075f487fe35a2c
Diameter
41382494
Circumference
130006939.13762
Area
1.3450028447053E+15
Volume
3.7106381433999E+22
Surface area
5.3800113788211E+15
Circumference
130006939.13762
Perimeter
82764988
Area
428127702415009
Diagonal
29261842.129812
Surface area
2568766214490054
Volume
8.8584960382114E+21
Space diagonal
35838291.075957
Perimeter
62073741
Area
1.8538473317763E+14
Altitude
17919145.537979
Surface area
1.8538473317763E+14
Volume
1.0439837699556E+21
Height
9753947.3766039