20771821 is an odd 8-digits composite number following 20771820
and preceding 20771822 . In scientific notation, it is written as 2.0771821 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 17804412 positive integers (up to 20771821) that are relatively prime to 20771821.
20771821 has 4 divisors, whose sum is 23739232
The reverse of 20771821 is 12817702
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million seven hundred seventy-one thousand eight hundred twenty-one
Scientific notation
2.0771821 × 10^7
Engineering notation
2.0771821 × 10^6
Prime Factorization
7 × 2967403
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20771821
Product of the distinct prime numbers
The prime factorization of 20771821 is 7 × 2967403.
Since it has a total of 2 prime factors.
4 , 5 , 81 , 91 , 351 , 627 , 7314 , 5425 , 3393 , 26725 , 107587 , 997527 , 1656412 , 2141110 , 18132978 , 24372945 , 471062487 , 905126276 , 1527479516 , 7108190601
n×2
41543642
n×3
62315463
n×4
83087284
n×5
103859105
n÷2
10385910.5
n÷3
6923940.3333333
n÷3
5192955.25
n÷5
4154364.2
n2
431468547656041
n3
8.9623874390413E+21
n4
1.8616510761641E+29
n5
3.8669882918539E+36
2 √n
4557.6113261225
3 √n
274.88952477094
4 √n
67.510083144094
5 √n
29.07333913525
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
-20771820
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 20771821 can be divided by 4 positive divisors.
The sum of these divisors (counting 20771821) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111001111001111101101
3
Ternary
1110002022120201
4
Quaternary
1033033033231
5
Quinary
20304144241
6
Senary
2021113501
8
Octal
117171755
10
Decimal
20771821
12
Duodecimal
6b58891
16
Hexadecimal
13cf3ed
20
Vigesimal
69g9b1
36
Base36
cd7n1
md5
f6b196ce78c607a9602756c76abfdfb5
sha1
7c97f16de634db728667ab4849ceb5e80b17363e
sha256
7da1a2ed513cd75bc8759c2329e3c48eb98f3654de21d7a4c01e80d70630e7a0
sha512
0d202287201ee8e66be600d04bca481c9123d996eff5776017fc215b64fb6dbadce876bfa28e0d5f5d06d52098badf1daaa1b8de9a4b85c18f884915f0689010
ripemd-160
b5fed817169378299fedec30203cc3625f7465aa
Diameter
41543642
Circumference
130513200.51056
Area
1.3554984195713E+15
Volume
3.7541560716157E+22
Surface area
5.4219936782851E+15
Circumference
130513200.51056
Perimeter
83087284
Area
431468547656041
Diagonal
29375790.973386
Surface area
2588811285936246
Volume
8.9623874390413E+21
Space diagonal
35977849.337726
Perimeter
62315463
Area
1.8683136160205E+14
Altitude
17988924.668863
Surface area
1.8683136160205E+14
Volume
1.0562274889612E+21
Height
9791930.3244621