21409918 is an even 8-digits composite number following 21409917
and preceding 21409919 . In scientific notation, it is written as 2.1409918 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 10239504 positive integers (up to 21409918) that are relatively prime to 21409918.
21409918 has 8 divisors, whose sum is 33511248
The reverse of 21409918 is 81990412
Previous prime number is 23
Is Prime? no
Number parity even
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million four hundred nine thousand nine hundred eighteen
Scientific notation
2.1409918 × 10^7
Engineering notation
2.1409918 × 10^6
Prime Factorization
2 × 23 × 465433
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21409918
Product of the distinct prime numbers
The prime factorization of 21409918 is 2 × 23 × 465433.
Since it has a total of 3 prime factors.
3 , 7 , 33 , 78 , 799 , 440 , 5562 , 3289 , 98698 , 95723 , 371174 , 676344 , 3711288 , 920062 , 31447385 , 63543479 , 389191529 , 852245652 , 7085640791 , 5177319028
n×2
42819836
n×3
64229754
n×4
85639672
n×5
107049590
n÷2
10704959
n÷3
7136639.3333333
n÷3
5352479.5
n÷5
4281983.6
n2
458384588766724
n3
9.8139764579593E+21
n4
2.1011643121884E+29
n5
4.498575562848E+36
2 √n
4627.0852596424
3 √n
277.67599365371
4 √n
68.022681949791
5 √n
29.24980672941
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
-21409917
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 21409918 can be divided by 8 positive divisors.
The sum of these divisors (counting 21409918) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001101011000001111110
3
Ternary
1111021201212221
4
Quaternary
1101223001332
5
Quinary
20440104133
6
Senary
2042515554
8
Octal
121530176
10
Decimal
21409918
12
Duodecimal
7205bba
16
Hexadecimal
146b07e
20
Vigesimal
6dg4fi
36
Base36
cqvzy
md5
3e8a2da32cca6cd98b9eed2cdf435483
sha1
2a51507bbd5250f37e45af62801c71610be452e1
sha256
bc0ff6f2ff5feeaca43f7b23bd6dfb6966dea5300ef1b8ccc71d005bda26b0e7
sha512
b035b0b0a0fec96b21ec41ad1c0151ddfb47bedabc01c0efa8f65e89fdd5b8506c4b1b09b7ab52f04e2ba7c45c1525645f79e1a83b86fc48e77ea301040c6a8e
ripemd-160
d92f1d373dc3f074b26072c5e8d2bb5349fb7bea
Diameter
42819836
Circumference
134522482.20552
Area
1.4400576565883E+15
Volume
4.1108688457104E+22
Surface area
5.7602306263533E+15
Circumference
134522482.20552
Perimeter
85639672
Area
458384588766724
Diagonal
30278196.404896
Surface area
2750307532600344
Volume
9.8139764579593E+21
Space diagonal
37083065.761883
Perimeter
64229754
Area
1.9848634928763E+14
Altitude
18541532.880942
Surface area
1.9848634928763E+14
Volume
1.1565882173047E+21
Height
10092732.134965