21431851 is an odd 8-digits composite number following 21431850
and preceding 21431852 . In scientific notation, it is written as 2.1431851 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 18118080 positive integers (up to 21431851) that are relatively prime to 21431851.
21431851 has 8 divisors, whose sum is 24829664
The reverse of 21431851 is 15813412
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million four hundred thirty-one thousand eight hundred fifty-one
Scientific notation
2.1431851 × 10^7
Engineering notation
2.1431851 × 10^6
Prime Factorization
7 × 73 × 41941
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21431851
Product of the distinct prime numbers
The prime factorization of 21431851 is 7 × 73 × 41941.
Since it has a total of 3 prime factors.
1 , 6 , 77 , 2 , 190 , 859 , 3440 , 3391 , 10561 , 36813 , 322058 , 650113 , 2892340 , 6813551 , 22763216 , 64168614 , 39681113 , 18610787 , 5808316521 , 1106610872
n×2
42863702
n×3
64295553
n×4
85727404
n×5
107159255
n÷2
10715925.5
n÷3
7143950.3333333
n÷3
5357962.75
n÷5
4286370.2
n2
459324237286201
n3
9.8441686142065E+21
n4
2.1097875495855E+29
n5
4.5216652404372E+36
2 √n
4629.4547195107
3 √n
277.77078132897
4 √n
68.04009641021
5 √n
29.255797161401
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
-21431850
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 21431851 can be divided by 8 positive divisors.
The sum of these divisors (counting 21431851) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001110000011000101011
3
Ternary
1111022211222021
4
Quaternary
1101300120223
5
Quinary
20441304401
6
Senary
2043205311
8
Octal
121603053
10
Decimal
21431851
12
Duodecimal
7216837
16
Hexadecimal
147062b
20
Vigesimal
6dijcb
36
Base36
crcx7
md5
e8676ae2eeffbb75e1e9c4a91a3ed4db
sha1
a6886ddb4d93c9662387ebcaa0d4331faf0c048d
sha256
b8c22681c0cc862389313b60c9e63859bc05da751a1bfe25ba9e990ba6ed1c42
sha512
d499f783ed9d1740196c291847ff0d12730f7a6f4e79a8a879281818a1e5b7f0f9d9fda25f20a748134524cfe63002d6ae43663ecb040b2331016aa775b0a522
ripemd-160
051892005ea5dfeac2bc70dc999bfde8f1d54b41
Diameter
42863702
Circumference
134660291.30886
Area
1.4430096494741E+15
Volume
4.1235157065454E+22
Surface area
5.7720385978963E+15
Circumference
134660291.30886
Perimeter
85727404
Area
459324237286201
Diagonal
30309214.350959
Surface area
2755945423717206
Volume
9.8441686142065E+21
Space diagonal
37121054.832246
Perimeter
64295553
Area
1.9889322903188E+14
Altitude
18560527.416123
Surface area
1.9889322903188E+14
Volume
1.1601463970415E+21
Height
10103071.45032