20993989 is an odd 8-digits composite number following 20993988
and preceding 20993990 . In scientific notation, it is written as 2.0993989 × 10^7.
The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors.
There are 20429136 positive integers (up to 20993989) that are relatively prime to 20993989.
20993989 has 8 divisors, whose sum is 21565440
The reverse of 20993989 is 98939902
Previous prime number is 127
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
twenty million nine hundred ninety-three thousand nine hundred eighty-nine
Scientific notation
2.0993989 × 10^7
Engineering notation
2.0993989 × 10^6
Prime Factorization
53 × 127 × 3119
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20993989
Product of the distinct prime numbers
The prime factorization of 20993989 is 53 × 127 × 3119.
Since it has a total of 3 prime factors.
6 , 1 , 38 , 18 , 324 , 814 , 7712 , 9721 , 76062 , 35219 , 151748 , 655557 , 3550671 , 4817689 , 61661244 , 10708463 , 999216956 , 85191802 , 8115743553 , 3096777805
n×2
41987978
n×3
62981967
n×4
83975956
n×5
104969945
n÷2
10496994.5
n÷3
6997996.3333333
n÷3
5248497.25
n÷5
4198797.8
n2
440747574132121
n3
9.2530497231064E+21
n4
1.9425842410335E+29
n5
4.0782592187831E+36
2 √n
4581.9197941474
3 √n
275.86609148606
4 √n
67.68987955483
5 √n
29.135266374617
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
-20993988
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 20993989 can be divided by 8 positive divisors.
The sum of these divisors (counting 20993989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000101011111000101
3
Ternary
1110111121100011
4
Quaternary
1100011133011
5
Quinary
20333301424
6
Senary
2025550221
8
Octal
120053705
10
Decimal
20993989
12
Duodecimal
7045371
16
Hexadecimal
14057c5
20
Vigesimal
6b44j9
36
Base36
chz2d
md5
7d4bbac3ee4def5bd1ecb60e3e0f168a
sha1
9c07a7ab48f2b215dabe85edbb87f3562083926d
sha256
a753a87d4b7e6ce890d8851ef9e2912ce3c7d16d99c6e4ca032b87d585269fbe
sha512
ee447c18f168f94f166cbd666a4b7f0fda0dafea700e4ea59a0c4620b1c54159db509a27dd963a0328ec3a6e3accd6c69abd3a04242045b4e57d934af6b894f0
ripemd-160
77029ee97f81b9de9f9c43684eea798d706d5b07
Diameter
41987978
Circumference
131909123.22389
Area
1.384649340981E+15
Volume
3.875908404455E+22
Surface area
5.538597363924E+15
Circumference
131909123.22389
Perimeter
83975956
Area
440747574132121
Diagonal
29689983.972112
Surface area
2644485444792726
Volume
9.2530497231064E+21
Space diagonal
36362655.601542
Perimeter
62981967
Area
1.9084929792739E+14
Altitude
18181327.800771
Surface area
1.9084929792739E+14
Volume
1.0904823676441E+21
Height
9896661.3240372