20421907 is an odd 8-digits composite number following 20421906
and preceding 20421908 . In scientific notation, it is written as 2.0421907 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 17411680 positive integers (up to 20421907) that are relatively prime to 20421907.
20421907 has 8 divisors, whose sum is 21360384
The reverse of 20421907 is 70912402
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million four hundred twenty-one thousand nine hundred seven
Scientific notation
2.0421907 × 10^7
Engineering notation
2.0421907 × 10^6
Prime Factorization
583 × 23 × 1523
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20421907
Product of the distinct prime numbers
The prime factorization of 20421907 is 583 × 23 × 1523.
Since it has a total of 3 prime factors.
4 , 4 , 35 , 74 , 263 , 693 , 6957 , 9679 , 94929 , 76379 , 712715 , 444462 , 9533099 , 9901402 , 80042128 , 35692496 , 881532002 , 982337465 , 8720348087 , 1557604790
n×2
40843814
n×3
61265721
n×4
81687628
n×5
102109535
n÷2
10210953.5
n÷3
6807302.3333333
n÷3
5105476.75
n÷5
4084381.4
n2
417054285516649
n3
8.5170438327725E+21
n4
1.739342770678E+29
n5
3.5520696303909E+36
2 √n
4519.0604111917
3 √n
273.33721473106
4 √n
67.223957122381
5 √n
28.974720734766
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
-20421906
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 20421907 can be divided by 8 positive divisors.
The sum of these divisors (counting 20421907) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101111001110100010011
3
Ternary
1102102112120221
4
Quaternary
1031321310103
5
Quinary
20212000112
6
Senary
2005413511
8
Octal
115716423
10
Decimal
20421907
12
Duodecimal
6a0a297
16
Hexadecimal
1379d13
20
Vigesimal
67cef7
36
Base36
c5pn7
md5
c526e1a588f0445cee60f8f04c75e988
sha1
7da4bcca816391526a5f38dde7722347f3a9ac06
sha256
db09ad28ba3e3b2cb961c01fc1acd438faf4e5b736a4045e9778ea57158a1651
sha512
0be6afb0d515db5bef8815f9285d666c73be931613088e332ec3aa14c11c08a7c5b9c6d55055922aaf38d70b79332b0dad95760b7e339171268be1395daa621b
ripemd-160
f9447784f07323f2701d70758d3c9cff4d7187b1
Diameter
40843814
Circumference
128314626.00699
Area
1.3102146795272E+15
Volume
3.5676109780454E+22
Surface area
5.240858718109E+15
Circumference
128314626.00699
Perimeter
81687628
Area
417054285516649
Diagonal
28880937.848922
Surface area
2502325713099894
Volume
8.5170438327725E+21
Space diagonal
35371780.511447
Perimeter
61265721
Area
1.8058980300729E+14
Altitude
17685890.255723
Surface area
1.8058980300729E+14
Volume
1.0037432416361E+21
Height
9626979.282974