20981912 is an even 8-digits composite number following 20981911
and preceding 20981913 . In scientific notation, it is written as 2.0981912 × 10^7.
The sum of its digits is 32. It has a total of 5 prime factors and 16 positive divisors.
There are 8992224 positive integers (up to 20981912) that are relatively prime to 20981912.
20981912 has 16 divisors, whose sum is 44961360
The reverse of 20981912 is 21918902
Previous prime number is 7
Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million nine hundred eighty-one thousand nine hundred twelve
Scientific notation
2.0981912 × 10^7
Engineering notation
2.0981912 × 10^6
Prime Factorization
2 × 2 × 2 × 7 × 374677
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
5245478
Product of the distinct prime numbers
The prime factorization of 20981912 is 2 × 2 × 2 × 7 × 374677.
Since it has a total of 5 prime factors.
8 , 1 , 1 , 26 , 541 , 513 , 9433 , 6267 , 23449 , 15732 , 798477 , 968155 , 9707700 , 4008378 , 92867985 , 92507850 , 827603029 , 652011761 , 5634697072 , 4734735073
n×2
41963824
n×3
62945736
n×4
83927648
n×5
104909560
n÷2
10490956
n÷3
6993970.6666667
n÷3
5245478
n÷5
4196382.4
n2
440240631175744
n3
9.2370901821539E+21
n4
1.9381181333802E+29
n5
4.0665424120187E+36
2 √n
4580.6017071996
3 √n
275.81318310607
4 √n
67.680142635781
5 √n
29.131913532946
1 , 2 , 4 , 7 , 8 , 14 , 28 , 56 , 374677 , 749354 , 1498708 , 2622739 , 2997416 , 5245478 , 10490956 , 20981912
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20981911
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20981912 can be divided by 16 positive divisors.
The sum of these divisors (counting 20981912) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000000010100010011000
3
Ternary
1110110222202212
4
Quaternary
1100002202120
5
Quinary
20332410122
6
Senary
2025414252
8
Octal
120024230
10
Decimal
20981912
12
Duodecimal
703a388
16
Hexadecimal
1402898
20
Vigesimal
6b2efc
36
Base36
chpqw
md5
e235a683c8e5405e236ac5925c2fdb0c
sha1
3b707528d75c0ff11e81ab1766ff24db8d7b956f
sha256
252fc49b43a15483bfd264d3f5ddf381c07978d12410089874e8f9a46023a944
sha512
4f302e9525e598f28a5aa8ffd23457321a33448f4336b39f9bc7e7a014ceca84dcc74f92145ff28715f958a2e9a1cbb114ad1ddb0bbfc4fc454fb9c8dbbe9eff
ripemd-160
f3030198a3732cbe8a434269768e70bd2fb38c21
Diameter
41963824
Circumference
131833241.19494
Area
1.3830567327135E+15
Volume
3.8692232875735E+22
Surface area
5.5322269308538E+15
Circumference
131833241.19494
Perimeter
83927648
Area
440240631175744
Diagonal
29672904.514919
Surface area
2641443787054464
Volume
9.2370901821539E+21
Space diagonal
36341737.623939
Perimeter
62945736
Area
1.9062978518814E+14
Altitude
18170868.81197
Surface area
1.9062978518814E+14
Volume
1.0886015177055E+21
Height
9890968.1716396