20851431 is an odd 8-digits composite number following 20851430
and preceding 20851432 . In scientific notation, it is written as 2.0851431 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 13577592 positive integers (up to 20851431) that are relatively prime to 20851431.
20851431 has 8 divisors, whose sum is 28448640
The reverse of 20851431 is 13415802
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty million eight hundred fifty-one thousand four hundred thirty-one
Scientific notation
2.0851431 × 10^7
Engineering notation
2.0851431 × 10^6
Prime Factorization
3 × 43 × 161639
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20851431
Product of the distinct prime numbers
The prime factorization of 20851431 is 3 × 43 × 161639.
Since it has a total of 3 prime factors.
6 , 9 , 93 , 9 , 410 , 264 , 6217 , 6949 , 37752 , 39836 , 492946 , 490753 , 9706776 , 66829 , 11213064 , 59838377 , 867326604 , 22848298 , 8010029975 , 4416772355
n×2
41702862
n×3
62554293
n×4
83405724
n×5
104257155
n÷2
10425715.5
n÷3
6950477
n÷3
5212857.75
n÷5
4170286.2
n2
434782174747761
n3
9.0658305167829E+21
n4
1.8903553947839E+29
n5
3.9416615079815E+36
2 √n
4566.3367155741
3 √n
275.24025725269
4 √n
67.574675105206
5 √n
29.095590322615
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
-20851430
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 20851431 can be divided by 8 positive divisors.
The sum of these divisors (counting 20851431) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111100010101011100111
3
Ternary
1110020100210020
4
Quaternary
1033202223213
5
Quinary
20314221211
6
Senary
2022530223
8
Octal
117425347
10
Decimal
20851431
12
Duodecimal
6b96973
16
Hexadecimal
13e2ae7
20
Vigesimal
6a68bb
36
Base36
cex2f
md5
084455e63846bb643d3130ac0311036c
sha1
925ee28b3a3cc46c79b68dffb06bff02d63bf4b4
sha256
12c656428b0baef0dc3c919ce74c40b81e89d691fdb575e3f9ad9d6d07df9a74
sha512
fe46dde9baa686f880c11f091b53113a5ee8257ceef18a4b46d67f16c3882de3a013d02e546a5096290b7293a7e70b86af0ebf3121a10284e2b6ee6cd71482db
ripemd-160
2cb38473c4508d77437dfd8e9ac715db6a9015ee
Diameter
41702862
Circumference
131013404.89287
Area
1.3659084860994E+15
Volume
3.7974862066954E+22
Surface area
5.4636339443974E+15
Circumference
131013404.89287
Perimeter
83405724
Area
434782174747761
Diagonal
29488376.515087
Surface area
2608693048486566
Volume
9.0658305167829E+21
Space diagonal
36115737.902517
Perimeter
62554293
Area
1.882662042221E+14
Altitude
18057868.951258
Surface area
1.882662042221E+14
Volume
1.0684183725842E+21
Height
9829458.8383623