20421709 is an odd 8-digits composite number following 20421708
and preceding 20421710 . In scientific notation, it is written as 2.0421709 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 14976000 positive integers (up to 20421709) that are relatively prime to 20421709.
20421709 has 8 divisors, whose sum is 21905208
The reverse of 20421709 is 90712402
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million four hundred twenty-one thousand seven hundred nine
Scientific notation
2.0421709 × 10^7
Engineering notation
2.0421709 × 10^6
Prime Factorization
77 × 17 × 15601
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20421709
Product of the distinct prime numbers
The prime factorization of 20421709 is 77 × 17 × 15601.
Since it has a total of 3 prime factors.
10 , 5 , 81 , 47 , 22 , 381 , 5544 , 3501 , 29041 , 81502 , 798371 , 535334 , 6763458 , 3765995 , 60744236 , 18482542 , 148261361 , 1297629 , 6097178281 , 4033852185
n×2
40843418
n×3
61265127
n×4
81686836
n×5
102108545
n÷2
10210854.5
n÷3
6807236.3333333
n÷3
5105427.25
n÷5
4084341.8
n2
417046198480681
n3
8.5167961049287E+21
n4
1.7392753166719E+29
n5
3.5518974387956E+36
2 √n
4519.0385039298
3 √n
273.33633135055
4 √n
67.223794179812
5 √n
28.974664549837
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
-20421708
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 20421709 can be divided by 8 positive divisors.
The sum of these divisors (counting 20421709) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101111001110001001101
3
Ternary
1102102112022121
4
Quaternary
1031321301031
5
Quinary
20211443314
6
Senary
2005412541
8
Octal
115716115
10
Decimal
20421709
12
Duodecimal
6a0a151
16
Hexadecimal
1379c4d
20
Vigesimal
67ce59
36
Base36
c5php
md5
492d4e2005a4e0644b85ef525f130175
sha1
8175a27f621c3a256b8bf205c6de79b61d2de6a4
sha256
e1d6c70006e3b78c92b645188e6d5b103e2a322bdd70a76b70452ff3cf166693
sha512
2fc1f394a0f14934bde19d6625466530481f701d717f976251e17dbaa0173ffd06456ac15a09b6da7f9451d3275d38b4114c2ea3552088f7745065c8224e8e4f
ripemd-160
46216245230631584992b62acd3553c6e2877ba4
Diameter
40843418
Circumference
128313381.9363
Area
1.3101892733545E+15
Volume
3.5675072100488E+22
Surface area
5.2407570934178E+15
Circumference
128313381.9363
Perimeter
81686836
Area
417046198480681
Diagonal
28880657.834637
Surface area
2502277190884086
Volume
8.5167961049287E+21
Space diagonal
35371437.565387
Perimeter
61265127
Area
1.80586301218E+14
Altitude
17685718.782693
Surface area
1.80586301218E+14
Volume
1.0037140466297E+21
Height
9626885.9448789