21085429 is an odd 8-digits composite number following 21085428
and preceding 21085430 . In scientific notation, it is written as 2.1085429 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 20919276 positive integers (up to 21085429) that are relatively prime to 21085429.
21085429 has 4 divisors, whose sum is 21251584
The reverse of 21085429 is 92458012
Previous prime number is 127
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million eighty-five thousand four hundred twenty-nine
Scientific notation
2.1085429 × 10^7
Engineering notation
2.1085429 × 10^6
Prime Factorization
127 × 166027
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21085429
Product of the distinct prime numbers
The prime factorization of 21085429 is 127 × 166027.
Since it has a total of 2 prime factors.
1 , 7 , 77 , 56 , 86 , 347 , 4041 , 3742 , 4041 , 84744 , 370247 , 56019 , 4464262 , 7650167 , 36764312 , 94963754 , 5657152 , 451813483 , 4728134009 , 6583582348
n×2
42170858
n×3
63256287
n×4
84341716
n×5
105427145
n÷2
10542714.5
n÷3
7028476.3333333
n÷3
5271357.25
n÷5
4217085.8
n2
444595316114041
n3
9.3744829716552E+21
n4
1.9766499511054E+29
n5
4.1678512201887E+36
2 √n
4591.8873026241
3 √n
276.2660259739
4 √n
67.763465839817
5 √n
29.160602192126
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21085428
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21085429 can be divided by 4 positive divisors.
The sum of these divisors (counting 21085429) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011011110011110101
3
Ternary
1110200020202211
4
Quaternary
1100123303311
5
Quinary
20344213204
6
Senary
2031533421
8
Octal
120336365
10
Decimal
21085429
12
Duodecimal
708a271
16
Hexadecimal
141bcf5
20
Vigesimal
6bfdb9
36
Base36
cjxmd
md5
a8cf80f3e21523b9bf6431382c5c4b5f
sha1
5a7d8105230991911b89b28abae20bf209ad53cc
sha256
1360a22c33e1a59ec7bb386f3455bddaf05b388beed02cc26799b3d19f602002
sha512
f25b4f6cae47ba72f5c70f58455daa3279ff00d42f0b1e9dd1d563ae573beb77f7bece32d7ab1a739aa753fd05fc490ab31610de569ab5005f27e18b42b06648
ripemd-160
f4b17aac5d4f6d4aa36f395d7230ba109f61145f
Diameter
42170858
Circumference
132483657.68838
Area
1.3967373789243E+15
Volume
3.9267742446606E+22
Surface area
5.5869495156972E+15
Circumference
132483657.68838
Perimeter
84341716
Area
444595316114041
Diagonal
29819299.660255
Surface area
2667571896684246
Volume
9.3744829716552E+21
Space diagonal
36521034.327386
Perimeter
63256287
Area
1.9251541907917E+14
Altitude
18260517.163693
Surface area
1.9251541907917E+14
Volume
1.1047934132292E+21
Height
9939766.5534183