20949939 is an odd 8-digits composite number following 20949938
and preceding 20949940 . In scientific notation, it is written as 2.0949939 × 10^7.
The sum of its digits is 45. It has a total of 2 prime factors and 4 positive divisors.
There are 13966620 positive integers (up to 20949939) that are relatively prime to 20949939.
20949939 has 4 divisors, whose sum is 23277720
The reverse of 20949939 is 93994902
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
twenty million nine hundred forty-nine thousand nine hundred thirty-nine
Scientific notation
2.0949939 × 10^7
Engineering notation
2.0949939 × 10^6
Prime Factorization
9 × 2327771
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20949939
Product of the distinct prime numbers
The prime factorization of 20949939 is 9 × 2327771.
Since it has a total of 2 prime factors.
4 , 5 , 51 , 87 , 197 , 449 , 4955 , 7938 , 89316 , 75921 , 724723 , 979553 , 3765316 , 47161 , 64616426 , 53693589 , 221824658 , 649363193 , 2006379531 , 5684766801
n×2
41899878
n×3
62849817
n×4
83799756
n×5
104749695
n÷2
10474969.5
n÷3
6983313
n÷3
5237484.75
n÷5
4189987.8
n2
438899944103721
n3
9.1949270560764E+21
n4
1.9263316093425E+29
n5
4.0356529709497E+36
2 √n
4577.1103329503
3 √n
275.67301383305
4 √n
67.654344523839
5 √n
29.123029662566
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
-20949938
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 20949939 can be divided by 4 positive divisors.
The sum of these divisors (counting 20949939) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111111010101110110011
3
Ternary
1110102100220200
4
Quaternary
1033322232303
5
Quinary
20330344224
6
Senary
2025010243
8
Octal
117725663
10
Decimal
20949939
12
Duodecimal
7023983
16
Hexadecimal
13fabb3
20
Vigesimal
6aiegj
36
Base36
ch12r
md5
8c978513ad2340a910e0b3cad0f263e4
sha1
6a0453b225bd2f6ecf8ec857fc27bf5bf958274e
sha256
dcb466d0503d19c5b55751a0faba85bc61e046493e1d0d0366974de33dbac343
sha512
aff69b89f9eece085b0225ce4ab6ce6b55eea79114e7ab695ac33db527789c99a048b4fc7da8bf34899fbe4c730d000abbd8633de89e8404c796735f346b365c
ripemd-160
e5f88e57efd2e0da8e37b050c7303ac53045700e
Diameter
41899878
Circumference
131632348.91111
Area
1.3788448400572E+15
Volume
3.8515620386218E+22
Surface area
5.5153793602289E+15
Circumference
131632348.91111
Perimeter
83799756
Area
438899944103721
Diagonal
29627687.864689
Surface area
2633399664622326
Volume
9.1949270560764E+21
Space diagonal
36286358.763469
Perimeter
62849817
Area
1.900492506567E+14
Altitude
18143179.381734
Surface area
1.900492506567E+14
Volume
1.0836325456445E+21
Height
9875895.9548963