20993821 is an odd 8-digits composite number following 20993820
and preceding 20993822 . In scientific notation, it is written as 2.0993821 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 20649600 positive integers (up to 20993821) that are relatively prime to 20993821.
20993821 has 4 divisors, whose sum is 21338044
The reverse of 20993821 is 12839902
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty million nine hundred ninety-three thousand eight hundred twenty-one
Scientific notation
2.0993821 × 10^7
Engineering notation
2.0993821 × 10^6
Prime Factorization
61 × 344161
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20993821
Product of the distinct prime numbers
The prime factorization of 20993821 is 61 × 344161.
Since it has a total of 2 prime factors.
3 , 9 , 58 , 66 , 676 , 980 , 1296 , 5695 , 32553 , 13336 , 729308 , 56138 , 4710528 , 6707949 , 41374429 , 82544587 , 530955026 , 185209333 , 1570375712 , 6758453451
n×2
41987642
n×3
62981463
n×4
83975284
n×5
104969105
n÷2
10496910.5
n÷3
6997940.3333333
n÷3
5248455.25
n÷5
4198764.2
n2
440740520180041
n3
9.2528275881067E+21
n4
1.9425220612857E+29
n5
4.0780960443184E+36
2 √n
4581.901461184
3 √n
275.86535563056
4 √n
67.689744135903
5 √n
29.135219744695
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20993820
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20993821 can be divided by 4 positive divisors.
The sum of these divisors (counting 20993821) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000101011100011101
3
Ternary
1110111121002221
4
Quaternary
1100011130131
5
Quinary
20333300241
6
Senary
2025545341
8
Octal
120053435
10
Decimal
20993821
12
Duodecimal
7045251
16
Hexadecimal
140571d
20
Vigesimal
6b44b1
36
Base36
chyxp
md5
0ca4f34303532c72ad828fa184382fc9
sha1
b52b05377ac857c64035cbba0004c6ef12727c9b
sha256
77d6436bfae61c4717bd06201a4fe126d476b69e6c4812a34d4ce07612eb1e15
sha512
c7aa8fdd2b61cf2bb4237bf568c8a00b7622855567dbd342dfbabfcbaac0a49c257e3efe26215e5718362819b9e9b73e6c30e6c0edc9e6e27239a84da16859f6
ripemd-160
7e0cefea159b8eb06c5c1c1b2deb3926da64e8fb
Diameter
41987642
Circumference
131908067.64876
Area
1.384627180337E+15
Volume
3.8758153567638E+22
Surface area
5.5385087213478E+15
Circumference
131908067.64876
Perimeter
83975284
Area
440740520180041
Diagonal
29689746.384233
Surface area
2644443121080246
Volume
9.2528275881067E+21
Space diagonal
36362364.617006
Perimeter
62981463
Area
1.9084624347654E+14
Altitude
18181182.308503
Surface area
1.9084624347654E+14
Volume
1.0904561887834E+21
Height
9896582.1280777