21371891 is an odd 8-digits prime number following 21371890
and preceding 21371892 . In scientific notation, it is written as 2.1371891 × 10^7.
The sum of its digits is 32. It has a total of 1 prime factors and 2 positive divisors.
There are 21371890 positive integers (up to 21371891) that are relatively prime to 21371891.
21371891 has 2 divisors, whose sum is 21371892
The reverse of 21371891 is 19817312
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 32 Digital Root 5
Name
twenty-one million three hundred seventy-one thousand eight hundred ninety-one
Scientific notation
2.1371891 × 10^7
Engineering notation
2.1371891 × 10^6
Prime Factorization
21371891
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21371891 Product of the distinct prime numbers
The prime factorization of 21371891 is 21371891.
Since it has a total of 1 prime factors.
2 , 2 , 12 , 51 , 567 , 628 , 406 , 5883 , 9351 , 75879 , 994308 , 478077 , 6281644 , 453564 , 88435089 , 31664564 , 932387789 , 335847512 , 4625658576 , 5855803119
n×2
42743782
n×3
64115673
n×4
85487564
n×5
106859455
n÷2
10685945.5
n÷3
7123963.6666667
n÷3
5342972.75
n÷5
4274378.2
n2
456757724915881
n3
9.7617763103102E+21
n4
2.0862761927033E+29
n5
4.458766738635E+36
2 √n4622.9742590674
3 √n277.5114991312
4 √n67.992457368942
5 √n29.239408992519
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21371892 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10685946 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4622.9743672229 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999064191 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21371891 can be divided by 2 positive divisors.
The sum of these divisors (counting 21371891) is 21371892, the average is 10685946.
Base
System
Value
2
Binary
1010001100001101111110011
3
Ternary
1111012210201112
4
Quaternary
1101201233303
5
Quinary
20432400031
6
Senary
2042023535
8
Octal
121415763
10
Decimal
21371891
12
Duodecimal
71a7bab
16
Hexadecimal
1461bf3
20
Vigesimal
6db9eb
36
Base36
cq2nn
md5
49cb2fcfef71040e26b3522b3a0a0046
sha1
7b421957e4b307a61936bb042ad9323754dfabf1
sha256
3231d1dde04e34797db05c7a970a2b5417a38030fc5711eea514a9d3558c65a8
sha512
08e07be1628e3288110d525a43d535f0657e192c4a9910a7537bc0a6e83f7feff4ff46e3264685614ea86828538d8793e5e9ca5e0c7ef9fbc2a46928bdfb6ec4
ripemd-160
aede8b21e7a51e750ee4762b3103c92270cc35ba
Diameter
42743782
Circumference
134283551.51784
Area
1.4349467130661E+15
Volume
4.0890032989943E+22
Surface area
5.7397868522645E+15
Circumference
134283551.51784
Perimeter
85487564
Area
456757724915881
Diagonal
30224418.105759
Surface area
2740546349495286
Volume
9.7617763103102E+21
Space diagonal
37017201.065824
Perimeter
64115673
Area
1.9778189657597E+14
Altitude
18508600.532912
Surface area
1.9778189657597E+14
Volume
1.1504363709078E+21
Height
10074806.035253