21131216 is an even 8-digits composite number following 21131215
and preceding 21131217 . In scientific notation, it is written as 2.1131216 × 10^7.
The sum of its digits is 17. It has a total of 6 prime factors and 20 positive divisors.
There are 10466016 positive integers (up to 21131216) that are relatively prime to 21131216.
21131216 has 20 divisors, whose sum is 41327712
The reverse of 21131216 is 61213112
Previous prime number is 107
Is Prime? no
Number parity even
Number length 8
Sum of Digits 17
Digital Root 8
Name
twenty-one million one hundred thirty-one thousand two hundred sixteen
Scientific notation
2.1131216 × 10^7
Engineering notation
2.1131216 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 107 × 12343
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
2641402
Product of the distinct prime numbers
The prime factorization of 21131216 is 2 × 2 × 2 × 2 × 107 × 12343.
Since it has a total of 6 prime factors.
7 , 5 , 65 , 4 , 440 , 826 , 5596 , 7027 , 52901 , 8087 , 700866 , 696324 , 8341044 , 5033610 , 27872215 , 85273905 , 539110223 , 102782675 , 5056173733 , 4397711327
n×2
42262432
n×3
63393648
n×4
84524864
n×5
105656080
n÷2
10565608
n÷3
7043738.6666667
n÷3
5282804
n÷5
4226243.2
n2
446528289638656
n3
9.435685738465E+21
n4
1.9938751344762E+29
n5
4.2133006143646E+36
2 √n
4596.8702396304
3 √n
276.46585192181
4 √n
67.800223005757
5 √n
29.173255653123
1 , 2 , 4 , 8 , 16 , 107 , 214 , 428 , 856 , 1712 , 12343 , 24686 , 49372 , 98744 , 197488 , 1320701 , 2641402 , 5282804 , 10565608 , 21131216
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21131215
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21131216 can be divided by 20 positive divisors.
The sum of these divisors (counting 21131216) is 1, the average is 0.05.
Base
System
Value
2
Binary
1010000100110111111010000
3
Ternary
1110202120120122
4
Quaternary
1100212333100
5
Quinary
20402144331
6
Senary
2032525412
8
Octal
120467720
10
Decimal
21131216
12
Duodecimal
70b0868
16
Hexadecimal
1426fd0
20
Vigesimal
6c180g
36
Base36
ckwy8
md5
bdbbee255a2189d8199b6fabd63c3238
sha1
8c6989f284d91e8f68535ed86f7cd18024049f4c
sha256
fd10cf90be6d6dd79a5636e54542de68f70ac83f4bddee97f5dcca8bb8b2df18
sha512
40601d94b50e9fa8460641e4854e989144ca79167b7ea2254c20336130e70ef9d2f881578b2c060065f412557c26b19a697fab23261feea1150678896261c942
ripemd-160
f6985009af17c9fa58e56c7ba65e0a886a3e42f0
Diameter
42262432
Circumference
132771345.89404
Area
1.4028099943488E+15
Volume
3.9524107996725E+22
Surface area
5.6112399773953E+15
Circumference
132771345.89404
Perimeter
84524864
Area
446528289638656
Diagonal
29884052.256635
Surface area
2679169737831936
Volume
9.435685738465E+21
Space diagonal
36600339.737712
Perimeter
63393648
Area
1.9335242116775E+14
Altitude
18300169.868856
Surface area
1.9335242116775E+14
Volume
1.112006228469E+21
Height
9961350.7522118