20457421 is an odd 8-digits composite number following 20457420
and preceding 20457422 . In scientific notation, it is written as 2.0457421 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 20351232 positive integers (up to 20457421) that are relatively prime to 20457421.
20457421 has 4 divisors, whose sum is 20563612
The reverse of 20457421 is 12475402
Previous prime number is 193
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million four hundred fifty-seven thousand four hundred twenty-one
Scientific notation
2.0457421 × 10^7
Engineering notation
2.0457421 × 10^6
Prime Factorization
193 × 105997
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20457421
Product of the distinct prime numbers
The prime factorization of 20457421 is 193 × 105997.
Since it has a total of 2 prime factors.
7 , 10 , 33 , 12 , 22 , 65 , 8854 , 9257 , 73678 , 67340 , 940451 , 499166 , 9456556 , 2757118 , 1926873 , 91243899 , 645606547 , 166526196 , 7350958313 , 1406697324
n×2
40914842
n×3
61372263
n×4
81829684
n×5
102287105
n÷2
10228710.5
n÷3
6819140.3333333
n÷3
5114355.25
n÷5
4091484.2
n2
418506073971241
n3
8.5615549462868E+21
n4
1.7514733395082E+29
n5
3.5830627476596E+36
2 √n
4522.9880610057
3 √n
273.49556880036
4 √n
67.253163947919
5 √n
28.984791226164
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
-20457420
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 20457421 can be divided by 4 positive divisors.
The sum of these divisors (counting 20457421) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110000010011111001101
3
Ternary
1102111100022021
4
Quaternary
1032002133031
5
Quinary
20214114141
6
Senary
2010250141
8
Octal
116023715
10
Decimal
20457421
12
Duodecimal
6a26951
16
Hexadecimal
13827cd
20
Vigesimal
67h3b1
36
Base36
c6h1p
md5
138fa0dc8be2895efeb0df1fd6683a71
sha1
d762a71d632bea5b4560f16f9b5dfe24c6bba351
sha256
6640c5e9bc1d7a4bc3154dbb638ef14f808b1ad098a4b74053a5cbec292a1131
sha512
e937520f41c9615d6721e761b6ca5ba944744f03b67f2a92bbaaba083ec5929c3d869a8ae28cb39ac70fd9223dbead3a1ffb04e13cae5df48877580d0f49525a
ripemd-160
8c196e0928bf3ba3246a95fdbd3021d0ce5c2a35
Diameter
40914842
Circumference
128537767.04999
Area
1.3147756074708E+15
Volume
3.5862557496747E+22
Surface area
5.259102429883E+15
Circumference
128537767.04999
Perimeter
81829684
Area
418506073971241
Diagonal
28931162.229376
Surface area
2511036443827446
Volume
8.5615549462868E+21
Space diagonal
35433292.563827
Perimeter
61372263
Area
1.8121844584859E+14
Altitude
17716646.281913
Surface area
1.8121844584859E+14
Volume
1.0089889266701E+21
Height
9643720.7431254