20158821 is an odd 8-digits composite number following 20158820
and preceding 20158822 . In scientific notation, it is written as 2.0158821 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 12296448 positive integers (up to 20158821) that are relatively prime to 20158821.
20158821 has 8 divisors, whose sum is 22429440
The reverse of 20158821 is 12885102
Previous prime number is 1887
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million one hundred fifty-eight thousand eight hundred twenty-one
Scientific notation
2.0158821 × 10^7
Engineering notation
2.0158821 × 10^6
Prime Factorization
9 × 1887 × 1187
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20158821
Product of the distinct prime numbers
The prime factorization of 20158821 is 9 × 1887 × 1187.
Since it has a total of 3 prime factors.
7 , 6 , 51 , 48 , 871 , 843 , 7844 , 271 , 67072 , 25052 , 136590 , 144227 , 490703 , 5013325 , 14556501 , 90744362 , 913264136 , 120227603 , 4370568480 , 5223978004
n×2
40317642
n×3
60476463
n×4
80635284
n×5
100794105
n÷2
10079410.5
n÷3
6719607
n÷3
5039705.25
n÷5
4031764.2
n2
406378064110041
n3
8.1921026527208E+21
n4
1.6514313098982E+29
n5
3.3290908170034E+36
2 √n
4489.857570124
3 √n
272.15837896288
4 √n
67.006399471424
5 √n
28.899679452934
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
-20158820
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 20158821 can be divided by 8 positive divisors.
The sum of these divisors (counting 20158821) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100111001100101100101
3
Ternary
1101221011201000
4
Quaternary
1030321211211
5
Quinary
20130040241
6
Senary
2000023513
8
Octal
114714545
10
Decimal
20158821
12
Duodecimal
6901b99
16
Hexadecimal
1339965
20
Vigesimal
65jh11
36
Base36
c02n9
md5
8069a8d76dfcf7dc64f4bc1561286c16
sha1
6b28c354fb8aa45cf175f9269070097350dcba50
sha256
be555b2581445e20e0b47448bc7bc95eb48fa512d053335e533109225d9885ae
sha512
e7b3e45e2a814ae956dd11423455bba027737ff9969550f557be084714adbbd68f759af45160c7dd7679df6295bcff9977bf7e14c44714051f8cece6ef6797bb
ripemd-160
c00775a35065d6afd615c7abdfa100501a259f32
Diameter
40317642
Circumference
126661607.91726
Area
1.2766743407881E+15
Volume
3.4314999348322E+22
Surface area
5.1066973631526E+15
Circumference
126661607.91726
Perimeter
80635284
Area
406378064110041
Diagonal
28508878.059652
Surface area
2438268384660246
Volume
8.1921026527208E+21
Space diagonal
34916102.192686
Perimeter
60476463
Area
1.7596686353002E+14
Altitude
17458051.096343
Surface area
1.7596686353002E+14
Volume
9.654485563192E+20
Height
9502959.3532172