20921843 is an odd 8-digits prime number following 20921842
and preceding 20921844 . In scientific notation, it is written as 2.0921843 × 10^7.
The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors.
There are 20921842 positive integers (up to 20921843) that are relatively prime to 20921843.
20921843 has 2 divisors, whose sum is 20921844
The reverse of 20921843 is 34812902
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million nine hundred twenty-one thousand eight hundred forty-three
Scientific notation
2.0921843 × 10^7
Engineering notation
2.0921843 × 10^6
Prime Factorization
20921843
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20921843
Product of the distinct prime numbers
The prime factorization of 20921843 is 20921843.
Since it has a total of 1 prime factors.
5 , 8 , 52 , 38 , 30 , 497 , 3867 , 4866 , 11278 , 14328 , 147370 , 237949 , 1645928 , 4110132 , 38854843 , 24064998 , 482435955 , 928147055 , 4023369179 , 9622344030
n×2
41843686
n×3
62765529
n×4
83687372
n×5
104609215
n÷2
10460921.5
n÷3
6973947.6666667
n÷3
5230460.75
n÷5
4184368.6
n2
437723514516649
n3
9.1579826481256E+21
n4
1.9160187516081E+29
n5
4.00866435062E+36
2 √n
4574.0401178827
3 √n
275.54972351393
4 √n
67.631650267332
5 √n
29.115214079595
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20921844
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10460922
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4574.0402271952
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999044061
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20921843 can be divided by 2 positive divisors.
The sum of these divisors (counting 20921843) is 20921844, the average is 10460922.
Base
System
Value
2
Binary
1001111110011110111110011
3
Ternary
1110100221101002
4
Quaternary
1033303313303
5
Quinary
20323444333
6
Senary
2024232215
8
Octal
117636763
10
Decimal
20921843
12
Duodecimal
700b66b
16
Hexadecimal
13f3df3
20
Vigesimal
6af4c3
36
Base36
cgfeb
md5
2e85855cdda22bce77d1ff5c27303c48
sha1
5e92a95a0b21977c9a61607b0233c32d1aec0cc9
sha256
f632639f113d1bb58882c4cab952cd652e9feb86874e41348f3a67f9701d6a51
sha512
05afab4780cc6d742de4cfe57c810c7afff3d7efbf413b3a0ee0a84dc2112505cd1e13c0cdd47be559758a0fae0a19567eb96773116557ea03a270c4de7ad312
ripemd-160
2e5fa76a5435a5a30f9eb62114050afccaa16a17
Diameter
41843686
Circumference
131455816.53672
Area
1.375148977509E+15
Volume
3.8360868012072E+22
Surface area
5.500595910036E+15
Circumference
131455816.53672
Perimeter
83687372
Area
437723514516649
Diagonal
29587954.120441
Surface area
2626341087099894
Volume
9.1579826481256E+21
Space diagonal
36237695.063979
Perimeter
62765529
Area
1.8953984170261E+14
Altitude
18118847.53199
Surface area
1.8953984170261E+14
Volume
1.0792786054131E+21
Height
9862651.3734802