20402989 is an odd 8-digits composite number following 20402988
and preceding 20402990 . In scientific notation, it is written as 2.0402989 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 20030976 positive integers (up to 20402989) that are relatively prime to 20402989.
20402989 has 8 divisors, whose sum is 20777720
The reverse of 20402989 is 98920402
Previous prime number is 277
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty million four hundred two thousand nine hundred eighty-nine
Scientific notation
2.0402989 × 10^7
Engineering notation
2.0402989 × 10^6
Prime Factorization
73 × 277 × 1009
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20402989
Product of the distinct prime numbers
The prime factorization of 20402989 is 73 × 277 × 1009.
Since it has a total of 3 prime factors.
2 , 5 , 13 , 28 , 329 , 266 , 8564 , 3472 , 91813 , 45486 , 563766 , 942409 , 2725266 , 3935738 , 41185743 , 54208602 , 157792623 , 154496226 , 5426950442 , 6463903212
n×2
40805978
n×3
61208967
n×4
81611956
n×5
102014945
n÷2
10201494.5
n÷3
6800996.3333333
n÷3
5100747.25
n÷5
4080597.8
n2
416281960134121
n3
8.4933962535149E+21
n4
1.7329067033311E+29
n5
3.535647640609E+36
2 √n
4516.9667919966
3 √n
273.25278593634
4 √n
67.208383346102
5 √n
28.969350550769
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
-20402988
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 20402989 can be divided by 8 positive divisors.
The sum of these divisors (counting 20402989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101110101001100101101
3
Ternary
1102101120122021
4
Quaternary
1031311030231
5
Quinary
20210343424
6
Senary
2005150141
8
Octal
115651455
10
Decimal
20402989
12
Duodecimal
69bb351
16
Hexadecimal
137532d
20
Vigesimal
67a799
36
Base36
c5b1p
md5
fbf0a0309b5da4f1aaae8ad7a08356d9
sha1
500eacf62e573537b7d79495bdc9e7d92f67ff11
sha256
1f2ba9437d010f6f31c18d00dfa027dcf99ec59dd63fba150f7eb9696b7c4466
sha512
7bf34f41ff1f28bd3ee3db9296a37a052bbd7a5bd1d11e2c61cce0d7acaa165b6ab19511f2e7c776098c39ebc2df0eae356fc62d34b7abd9160345e80843c8a5
ripemd-160
f8cde992b5a557f6dc0e87cf4518a7db1ec3022d
Diameter
40805978
Circumference
128195760.70735
Area
1.3077883477793E+15
Volume
3.5577055032093E+22
Surface area
5.2311533911173E+15
Circumference
128195760.70735
Perimeter
81611956
Area
416281960134121
Diagonal
28854183.756749
Surface area
2497691760804726
Volume
8.4933962535149E+21
Space diagonal
35339013.574269
Perimeter
61208967
Area
1.8025537630666E+14
Altitude
17669506.787134
Surface area
1.8025537630666E+14
Volume
1.0009563476941E+21
Height
9618061.2522497