21421207 is an odd 8-digits composite number following 21421206
and preceding 21421208 . In scientific notation, it is written as 2.1421207 × 10^7.
The sum of its digits is 19. It has a total of 3 prime factors and 8 positive divisors.
There are 20078592 positive integers (up to 21421207) that are relatively prime to 21421207.
21421207 has 8 divisors, whose sum is 22774176
The reverse of 21421207 is 70212412
Previous prime number is 257
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty-one million four hundred twenty-one thousand two hundred seven
Scientific notation
2.1421207 × 10^7
Engineering notation
2.1421207 × 10^6
Prime Factorization
17 × 257 × 4903
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21421207
Product of the distinct prime numbers
The prime factorization of 21421207 is 17 × 257 × 4903.
Since it has a total of 3 prime factors.
1 , 1 , 10 , 41 , 353 , 445 , 655 , 9148 , 89805 , 79661 , 231896 , 125085 , 2006465 , 7541000 , 49565895 , 73891800 , 624219868 , 844532294 , 2412971429 , 6363533350
n×2
42842414
n×3
64263621
n×4
85684828
n×5
107106035
n÷2
10710603.5
n÷3
7140402.3333333
n÷3
5355301.75
n÷5
4284241.4
n2
458868109336849
n3
9.8295087558033E+21
n4
2.1055994176637E+29
n5
4.5104480984855E+36
2 √n
4628.304981308
3 √n
277.72478931783
4 √n
68.031646910155
5 √n
29.252890640773
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
-21421206
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 21421207 can be divided by 8 positive divisors.
The sum of these divisors (counting 21421207) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001101101110010010111
3
Ternary
1111022022101001
4
Quaternary
1101231302113
5
Quinary
20440434312
6
Senary
2043044131
8
Octal
121556227
10
Decimal
21421207
12
Duodecimal
7210647
16
Hexadecimal
146dc97
20
Vigesimal
6dhd07
36
Base36
cr4pj
md5
853413d8a52af0763319ff30a330aa65
sha1
a84702f3025c863b6391fb57e61a8bc9ce80dd17
sha256
2173d1c5fe545a45d25eb99888cab270af6b0af1e7bbbbcf59710dbfb83cd01a
sha512
54e7085cb43d52e94b0373fd08291958a07208ab136a971cfcc9a85834adbe18da2af720a053baf1ad6fba3d75d2056ebf52b42eeeffa278787c79f53b105825
ripemd-160
b7b8acea31e21b204c85d0159f6fc259a5bdd88b
Diameter
42842414
Circumference
134593413.08445
Area
1.4415766812593E+15
Volume
4.1173749994171E+22
Surface area
5.7663067250371E+15
Circumference
134593413.08445
Perimeter
85684828
Area
458868109336849
Diagonal
30294161.461801
Surface area
2753208656021094
Volume
9.8295087558033E+21
Space diagonal
37102618.88345
Perimeter
64263621
Area
1.9869571983612E+14
Altitude
18551309.441725
Surface area
1.9869571983612E+14
Volume
1.1584187161602E+21
Height
10098053.8206