20959987 is an odd 8-digits prime number following 20959986
and preceding 20959988 . In scientific notation, it is written as 2.0959987 × 10^7.
The sum of its digits is 49. It has a total of 1 prime factors and 2 positive divisors.
There are 20959986 positive integers (up to 20959987) that are relatively prime to 20959987.
20959987 has 2 divisors, whose sum is 20959988
The reverse of 20959987 is 78995902
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
twenty million nine hundred fifty-nine thousand nine hundred eighty-seven
Scientific notation
2.0959987 × 10^7
Engineering notation
2.0959987 × 10^6
Prime Factorization
20959987
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20959987
Product of the distinct prime numbers
The prime factorization of 20959987 is 20959987.
Since it has a total of 1 prime factors.
10 , 3 , 61 , 81 , 124 , 963 , 9320 , 430 , 63665 , 48657 , 268897 , 977663 , 3602526 , 2224308 , 76513222 , 4223011 , 949509483 , 335649171 , 4811663472 , 9163225048
n×2
41919974
n×3
62879961
n×4
83839948
n×5
104799935
n÷2
10479993.5
n÷3
6986662.3333333
n÷3
5239996.75
n÷5
4191997.4
n2
439321055040169
n3
9.2081636024682E+21
n4
1.9300298940161E+29
n5
4.0453401488188E+36
2 √n
4578.2078371345
3 √n
275.71707950978
4 √n
67.662455151543
5 √n
29.125822721564
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20959988
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10479994
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4578.2079463476
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999045801
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20959987 can be divided by 2 positive divisors.
The sum of these divisors (counting 20959987) is 20959988, the average is 10479994.
Base
System
Value
2
Binary
1001111111101001011110011
3
Ternary
1110102212200211
4
Quaternary
1033331023303
5
Quinary
20331204422
6
Senary
2025124551
8
Octal
117751363
10
Decimal
20959987
12
Duodecimal
7029757
16
Hexadecimal
13fd2f3
20
Vigesimal
6ajjj7
36
Base36
ch8tv
md5
5ad0350b472197a79538066de1118aa7
sha1
5af74234e8ee39f32dcab70d74efa534778eb7c7
sha256
1e445cd5205b0b9600f7d91c8947d86c3825690f85bb7679c2a25b77c4a72e8f
sha512
95d3aa8a52a21add95ba679c818f12f25eb4aeed03d23d3aa62e7f43a355baf71b5546557e6d899bdac5b63fa54be6385e7742f8a3c1b27248d607eb2696875b
ripemd-160
2f8a9cba4473164138ea25f96c3b69fc1e586963
Diameter
41919974
Circumference
131695482.35708
Area
1.3801677990815E+15
Volume
3.8571065502089E+22
Surface area
5.520671196326E+15
Circumference
131695482.35708
Perimeter
83839948
Area
439321055040169
Diagonal
29641897.882564
Surface area
2635926330241014
Volume
9.2081636024682E+21
Space diagonal
36303762.409983
Perimeter
62879961
Area
1.9023159704108E+14
Altitude
18151881.204992
Surface area
1.9023159704108E+14
Volume
1.0851924875967E+21
Height
9880632.6275213