21487306 is an even 8-digits composite number following 21487305
and preceding 21487307 . In scientific notation, it is written as 2.1487306 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 10453248 positive integers (up to 21487306) that are relatively prime to 21487306.
21487306 has 8 divisors, whose sum is 33102180
The reverse of 21487306 is 60378412
Previous prime number is 37
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million four hundred eighty-seven thousand three hundred six
Scientific notation
2.1487306 × 10^7
Engineering notation
2.1487306 × 10^6
Prime Factorization
2 × 37 × 290369
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21487306
Product of the distinct prime numbers
The prime factorization of 21487306 is 2 × 37 × 290369.
Since it has a total of 3 prime factors.
3 , 10 , 82 , 26 , 312 , 927 , 7168 , 8799 , 53247 , 31009 , 145023 , 544366 , 4365744 , 1309513 , 48495029 , 38259755 , 771805279 , 164167311 , 5782762376 , 7848080840
n×2
42974612
n×3
64461918
n×4
85949224
n×5
107436530
n÷2
10743653
n÷3
7162435.3333333
n÷3
5371826.5
n÷5
4297461.2
n2
461704319137636
n3
9.920781986832E+21
n4
2.1317087831035E+29
n5
4.5804678925432E+36
2 √n
4635.4402164196
3 √n
278.01015265787
4 √n
68.084067272891
5 √n
29.270921414249
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
-21487305
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 21487306 can be divided by 8 positive divisors.
The sum of these divisors (counting 21487306) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111101111011001010
3
Ternary
1111102200001011
4
Quaternary
1101331323022
5
Quinary
21000043211
6
Senary
2044314134
8
Octal
121757312
10
Decimal
21487306
12
Duodecimal
724294a
16
Hexadecimal
147deca
20
Vigesimal
6e5i56
36
Base36
csjpm
md5
9eb3a07fee6ed7a8521de18b47b7a645
sha1
5c3b7777536c003779bcd4bd85823d2646a70ac5
sha256
adac8979af762ee757962e4bde0bebfd3152bc02b7cf0a8334f096c4cc8f067b
sha512
69abe6edbf7a6e3d13e89e8e225ef759ba7b47147f82faa4829458e9bccf2365f0db8e29ba9878dcfe3e95e88185d6bd5f3f2ec6a95fb11915881e7c6b3b0be5
ripemd-160
44de5d6214e8ebfc55d569ecd049d0a145114d2b
Diameter
42974612
Circumference
135008725.35007
Area
1.4504868971335E+15
Volume
4.1556074410263E+22
Surface area
5.8019475885339E+15
Circumference
135008725.35007
Perimeter
85949224
Area
461704319137636
Diagonal
30387639.564061
Surface area
2770225914825816
Volume
9.920781986832E+21
Space diagonal
37217105.70978
Perimeter
64461918
Area
1.999238347051E+14
Altitude
18608552.85489
Surface area
1.999238347051E+14
Volume
1.1691753695937E+21
Height
10129213.18802