20188457 is an odd 8-digits composite number following 20188456
and preceding 20188458 . In scientific notation, it is written as 2.0188457 × 10^7.
The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors.
There are 18598272 positive integers (up to 20188457) that are relatively prime to 20188457.
20188457 has 16 divisors, whose sum is 21859200
The reverse of 20188457 is 75488102
Previous prime number is 137
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty million one hundred eighty-eight thousand four hundred fifty-seven
Scientific notation
2.0188457 × 10^7
Engineering notation
2.0188457 × 10^6
Prime Factorization
23 × 43 × 137 × 149
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20188457
Product of the distinct prime numbers
The prime factorization of 20188457 is 23 × 43 × 137 × 149.
Since it has a total of 4 prime factors.
2 , 9 , 67 , 29 , 940 , 963 , 639 , 5406 , 73232 , 6824 , 989530 , 373172 , 950617 , 94109 , 83953047 , 35040079 , 854530732 , 673248406 , 406030876 , 4774813660
n×2
40376914
n×3
60565371
n×4
80753828
n×5
100942285
n÷2
10094228.5
n÷3
6729485.6666667
n÷3
5047114.25
n÷5
4037691.4
n2
407573796040849
n3
8.2282860556975E+21
n4
1.6611639921915E+29
n5
3.3536337826306E+36
2 √n
4493.1566854496
3 √n
272.29168266518
4 √n
67.031012863074
5 √n
28.908171692595
1 , 23 , 43 , 137 , 149 , 989 , 3151 , 3427 , 5891 , 6407 , 20413 , 135493 , 147361 , 469499 , 877759 , 20188457
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20188456
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20188457 can be divided by 16 positive divisors.
The sum of these divisors (counting 20188457) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001101000000110100101001
3
Ternary
1101222200100122
4
Quaternary
1031000310221
5
Quinary
20132012312
6
Senary
2000413025
8
Octal
115006451
10
Decimal
20188457
12
Duodecimal
6917175
16
Hexadecimal
1340d29
20
Vigesimal
663b2h
36
Base36
c0pih
md5
5c59e513fe6388ed02a240fb4b747667
sha1
d7b82e924323f25fde0e83d5cf1a4dbcb956d07f
sha256
2b7d2c57a1cd29864bd55c3d74ac33f9c5a4e5a209a3dca7d98677da3601bc9e
sha512
c7b1f28028af478baf723be0df2963082a94454aaf2fc958aac6f8da2559ea219401eb0a2983583fb68cdf2e20f88c9fc35e7989e724e2051cfc43ef1a894ace
ripemd-160
089379ba4959831ce8566bde0e8467a51af1151c
Diameter
40376914
Circumference
126847816.39703
Area
1.2804308434376E+15
Volume
3.4466564032286E+22
Surface area
5.1217233737505E+15
Circumference
126847816.39703
Perimeter
80753828
Area
407573796040849
Diagonal
28550789.692786
Surface area
2445442776245094
Volume
8.2282860556975E+21
Space diagonal
34967433.25042
Perimeter
60565371
Area
1.7648463064412E+14
Altitude
17483716.62521
Surface area
1.7648463064412E+14
Volume
9.697128112544E+20
Height
9516929.8975953