20007781 is an odd 8-digits prime number following 20007780
and preceding 20007782 . In scientific notation, it is written as 2.0007781 × 10^7.
The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors.
There are 20007780 positive integers (up to 20007781) that are relatively prime to 20007781.
20007781 has 2 divisors, whose sum is 20007782
The reverse of 20007781 is 18770002
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million seven thousand seven hundred eighty-one
Scientific notation
2.0007781 × 10^7
Engineering notation
2.0007781 × 10^6
Prime Factorization
20007781
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20007781
Product of the distinct prime numbers
The prime factorization of 20007781 is 20007781.
Since it has a total of 1 prime factors.
1 , 5 , 27 , 45 , 992 , 56 , 666 , 7505 , 44687 , 36936 , 132504 , 360962 , 1023361 , 1019043 , 88449863 , 85717597 , 361062067 , 284442957 , 1893211520 , 2440200640
n×2
40015562
n×3
60023343
n×4
80031124
n×5
100038905
n÷2
10003890.5
n÷3
6669260.3333333
n÷3
5001945.25
n÷5
4001556.2
n2
400311300543961
n3
8.0093408331088E+21
n4
1.602491373432E+29
n5
3.2062296454016E+36
2 √n
4473.0058126499
3 √n
271.47695856789
4 √n
66.880533884307
5 √n
28.856242898432
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20007782
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10003891
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4473.0059244316
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999000389
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20007781 can be divided by 2 positive divisors.
The sum of these divisors (counting 20007781) is 20007782, the average is 10003891.
Base
System
Value
2
Binary
1001100010100101101100101
3
Ternary
1101122111111221
4
Quaternary
1030110231211
5
Quinary
20110222111
6
Senary
1552500341
8
Octal
114245545
10
Decimal
20007781
12
Duodecimal
684a6b1
16
Hexadecimal
1314b65
20
Vigesimal
650j91
36
Base36
bwu3p
md5
dcb5277bc71605dce0f5961382c0e9df
sha1
067b5a557ff5070c13dba65e45d519515c235557
sha256
c3ed1297a58b136bf56a68fea8fbca7fc4f18c68b32e2eead4a4fb8224680f98
sha512
143526a30df356947f38e6eef19b880c08eb0258c998cb77d4a5f4dbc2419568d97c3c0e348b8e16476c9649fdcc5f3f5d2f6938fb262e91ca2af3451c91a5bc
ripemd-160
e17ec28a252ceba95d399497ee6923a08d2ad34f
Diameter
40015562
Circumference
125712595.60847
Area
1.2576150409379E+15
Volume
3.3549448428522E+22
Surface area
5.0304601637515E+15
Circumference
125712595.60847
Perimeter
80031124
Area
400311300543961
Diagonal
28295275.243191
Surface area
2401867803263766
Volume
8.0093408331088E+21
Space diagonal
34654493.238711
Perimeter
60023343
Area
1.7333987784653E+14
Altitude
17327246.619356
Surface area
1.7333987784653E+14
Volume
9.4390986932092E+20
Height
9431758.4143969