20993887 is an odd 8-digits composite number following 20993886
and preceding 20993888 . In scientific notation, it is written as 2.0993887 × 10^7.
The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors.
There are 20955640 positive integers (up to 20993887) that are relatively prime to 20993887.
20993887 has 4 divisors, whose sum is 21032136
The reverse of 20993887 is 78839902
Previous prime number is 557
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty million nine hundred ninety-three thousand eight hundred eighty-seven
Scientific notation
2.0993887 × 10^7
Engineering notation
2.0993887 × 10^6
Prime Factorization
557 × 37691
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20993887
Product of the distinct prime numbers
The prime factorization of 20993887 is 557 × 37691.
Since it has a total of 2 prime factors.
9 , 4 , 8 , 1 , 459 , 324 , 6122 , 1017 , 8320 , 65257 , 221056 , 595631 , 2807577 , 3601314 , 62080455 , 2596537 , 831654613 , 995353296 , 7086950045 , 5983532871
n×2
41987774
n×3
62981661
n×4
83975548
n×5
104969435
n÷2
10496943.5
n÷3
6997962.3333333
n÷3
5248471.75
n÷5
4198777.4
n2
440743291368769
n3
9.252914855004E+21
n4
1.9425464888658E+29
n5
4.0781601479494E+36
2 √n
4581.9086634284
3 √n
275.86564471712
4 √n
67.689797336293
5 √n
29.135238063628
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
-20993886
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 20993887 can be divided by 4 positive divisors.
The sum of these divisors (counting 20993887) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000101011101011111
3
Ternary
1110111121012101
4
Quaternary
1100011131133
5
Quinary
20333301022
6
Senary
2025545531
8
Octal
120053537
10
Decimal
20993887
12
Duodecimal
70452a7
16
Hexadecimal
140575f
20
Vigesimal
6b44e7
36
Base36
chyzj
md5
34511368f306877744c28cf1fb72c8f8
sha1
ebc17c90459af4978bf6475ace2b4f8a16a3302a
sha256
ea6e76f6d992c5fec9d773d534996d4900201bcf3496fae3f8de8ff8f9f35b7d
sha512
b2f8d6831cc208b0d938e47b5ac206664a7132d941a4cfdcc371df143db693a2731c908de8c9b84820af5cc195a5b382c578f37a5e439887a19ee88d19a93e0a
ripemd-160
79b293bba33df5efb71f2545c2d784bc21cedc87
Diameter
41987774
Circumference
131908482.33899
Area
1.3846358862831E+15
Volume
3.8758519110363E+22
Surface area
5.5385435451324E+15
Circumference
131908482.33899
Perimeter
83975548
Area
440743291368769
Diagonal
29689839.722328
Surface area
2644459748212614
Volume
9.252914855004E+21
Space diagonal
36362478.93236
Perimeter
62981661
Area
1.9084744343646E+14
Altitude
18181239.46618
Surface area
1.9084744343646E+14
Volume
1.0904664732858E+21
Height
9896613.2407761