20777781 is an odd 8-digits composite number following 20777780
and preceding 20777782 . In scientific notation, it is written as 2.0777781 × 10^7.
The sum of its digits is 39. It has a total of 4 prime factors and 12 positive divisors.
There are 13403160 positive integers (up to 20777781) that are relatively prime to 20777781.
20777781 has 12 divisors, whose sum is 28630176
The reverse of 20777781 is 18777702
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million seven hundred seventy-seven thousand seven hundred eighty-one
Scientific notation
2.0777781 × 10^7
Engineering notation
2.0777781 × 10^6
Prime Factorization
3 × 31 × 31 × 7207
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
670251
Product of the distinct prime numbers
The prime factorization of 20777781 is 3 × 31 × 31 × 7207.
Since it has a total of 4 prime factors.
2 , 5 , 29 , 38 , 174 , 50 , 8659 , 9506 , 37452 , 16057 , 48491 , 400022 , 70365 , 7423250 , 18923632 , 65358792 , 642193953 , 746479458 , 2125451975 , 8245652334
n×2
41555562
n×3
62333343
n×4
83111124
n×5
103888905
n÷2
10388890.5
n÷3
6925927
n÷3
5194445.25
n÷5
4155556.2
n2
431716183283961
n3
8.97010431043E+21
n4
1.8637886290927E+29
n5
3.8725391965578E+36
2 √n
4558.2651305074
3 √n
274.91581334875
4 √n
67.514925242552
5 √n
29.075007330036
1 , 3 , 31 , 93 , 961 , 2883 , 7207 , 21621 , 223417 , 670251 , 6925927 , 20777781
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20777780
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20777781 can be divided by 12 positive divisors.
The sum of these divisors (counting 20777781) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001111010000101100110101
3
Ternary
1110002121202110
4
Quaternary
1033100230311
5
Quinary
20304342111
6
Senary
2021201233
8
Octal
117205465
10
Decimal
20777781
12
Duodecimal
6b60219
16
Hexadecimal
13d0b35
20
Vigesimal
69h491
36
Base36
cdc8l
md5
5f85f39321830bab2fad5281f84cba51
sha1
0277635dabe670b86923ba25c5c8471533a7147c
sha256
1621f9a4efc181513363d3b366d781a69f0f05c1b2ac5441d883c5af6be9c31b
sha512
7b6687322de66197356fc15fed06bf6f4817616046e5efef92186d7c8d347c797ffba0ece9806db551f121725f5e30c5759d61829c7ab3434932c3e904621368
ripemd-160
2597f177e175cd04de58cefb605250ef5190c768
Diameter
41555562
Circumference
130550648.295
Area
1.3562763898407E+15
Volume
3.7573885071441E+22
Surface area
5.4251055593629E+15
Circumference
130550648.295
Perimeter
83111124
Area
431716183283961
Diagonal
29384219.686218
Surface area
2590297099703766
Volume
8.97010431043E+21
Space diagonal
35988172.360539
Perimeter
62333343
Area
1.8693859097438E+14
Altitude
17994086.18027
Surface area
1.8693859097438E+14
Volume
1.057136930976E+21
Height
9794739.895406