20178421 is an odd 8-digits composite number following 20178420
and preceding 20178422 . In scientific notation, it is written as 2.0178421 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 19982412 positive integers (up to 20178421) that are relatively prime to 20178421.
20178421 has 4 divisors, whose sum is 20374432
The reverse of 20178421 is 12487102
Previous prime number is 103
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million one hundred seventy-eight thousand four hundred twenty-one
Scientific notation
2.0178421 × 10^7
Engineering notation
2.0178421 × 10^6
Prime Factorization
103 × 195907
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20178421
Product of the distinct prime numbers
The prime factorization of 20178421 is 103 × 195907.
Since it has a total of 2 prime factors.
2 , 8 , 69 , 50 , 701 , 500 , 6406 , 9026 , 52291 , 89104 , 91738 , 222331 , 7235682 , 8871884 , 9365603 , 10803662 , 959948956 , 431741438 , 313660135 , 6127945569
n×2
40356842
n×3
60535263
n×4
80713684
n×5
100892105
n÷2
10089210.5
n÷3
6726140.3333333
n÷3
5044605.25
n÷5
4035684.2
n2
407168674053241
n3
8.2160209230581E+21
n4
1.6578632913027E+29
n5
3.3453063452352E+36
2 √n
4492.039737135
3 √n
272.24655502486
4 √n
67.022680766551
5 √n
28.905296979406
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
-20178420
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 20178421 can be divided by 4 positive divisors.
The sum of these divisors (counting 20178421) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111110010111110101
3
Ternary
1101222011120221
4
Quaternary
1030332113311
5
Quinary
20131202141
6
Senary
2000254341
8
Octal
114762765
10
Decimal
20178421
12
Duodecimal
69113b1
16
Hexadecimal
133e5f5
20
Vigesimal
662611
36
Base36
c0hrp
md5
de34796e5dca49f24215fac035647870
sha1
352002f1e5519b51452caf6a065690f704ee6d73
sha256
f05c673b6f0a191321676553e8dcf66efae25cbb32810d4efc6336398d5324e1
sha512
2c4fcf9ae0291bb136e7125038a8a05179454ffbe31aac03fe57c21ede5fb7ef58f9b07ebecf382884168d0823105c7301b67f3647b52e4400dbe5bc87c2e0ea
ripemd-160
39864be27a410812d1bd93cca73bb237cc5f6bb6
Diameter
40356842
Circumference
126784758.34928
Area
1.2791581151776E+15
Volume
3.4415187964826E+22
Surface area
5.1166324607102E+15
Circumference
126784758.34928
Perimeter
80713684
Area
407168674053241
Diagonal
28536596.645474
Surface area
2443012044319446
Volume
8.2160209230581E+21
Space diagonal
34950050.388515
Perimeter
60535263
Area
1.7630920767767E+14
Altitude
17475025.194257
Surface area
1.7630920767767E+14
Volume
9.6826735151082E+20
Height
9512198.8818247