20851631 is an odd 8-digits composite number following 20851630
and preceding 20851632 . In scientific notation, it is written as 2.0851631 × 10^7.
The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors.
There are 20386080 positive integers (up to 20851631) that are relatively prime to 20851631.
20851631 has 8 divisors, whose sum is 21320064
The reverse of 20851631 is 13615802
Previous prime number is 397
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty million eight hundred fifty-one thousand six hundred thirty-one
Scientific notation
2.0851631 × 10^7
Engineering notation
2.0851631 × 10^6
Prime Factorization
53 × 397 × 991
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20851631
Product of the distinct prime numbers
The prime factorization of 20851631 is 53 × 397 × 991.
Since it has a total of 3 prime factors.
6 , 10 , 63 , 74 , 148 , 954 , 8402 , 1502 , 84330 , 59954 , 455265 , 672131 , 3545152 , 2965841 , 79108524 , 92157708 , 122803123 , 28511029 , 1418114342 , 7544090184
n×2
41703262
n×3
62554893
n×4
83406524
n×5
104258155
n÷2
10425815.5
n÷3
6950543.6666667
n÷3
5212907.75
n÷5
4170326.2
n2
434790515360161
n3
9.0660913885899E+21
n4
1.8904279224715E+29
n5
3.9418505471473E+36
2 √n
4566.3586149141
3 √n
275.24113725425
4 √n
67.574837143082
5 √n
29.095646137449
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
-20851630
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 20851631 can be divided by 8 positive divisors.
The sum of these divisors (counting 20851631) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111100010101110101111
3
Ternary
1110020101001122
4
Quaternary
1033202232233
5
Quinary
20314223011
6
Senary
2022531155
8
Octal
117425657
10
Decimal
20851631
12
Duodecimal
6b96abb
16
Hexadecimal
13e2baf
20
Vigesimal
6a691b
36
Base36
cex7z
md5
50a1a339ed97df85adb9a1b826bf84c5
sha1
ee589678f7df992b503b0b0c276d9533a890d5b3
sha256
f14feb9c2923b768b47c8f0870f5f13cccbef42a914be2e9aaa80971580027a2
sha512
5d9b2d63a9dd07c10e8dd2325715013e17eaf74b9379f632bbd83eb754fc69462b29ec8b08fb66a3b492d8750fc3b965ee7ce680cd7b2d89a9cc530b288c9421
ripemd-160
80017e04b0e7a0ab29ef2524f2c5ac578b3cc7da
Diameter
41703262
Circumference
131014661.52993
Area
1.365934688906E+15
Volume
3.7975954804224E+22
Surface area
5.463738755624E+15
Circumference
131014661.52993
Perimeter
83406524
Area
434790515360161
Diagonal
29488659.357799
Surface area
2608743092160966
Volume
9.0660913885899E+21
Space diagonal
36116084.312678
Perimeter
62554893
Area
1.8826981581321E+14
Altitude
18058042.156339
Surface area
1.8826981581321E+14
Volume
1.0684491166215E+21
Height
9829553.1192664