21291715 is an odd 8-digits composite number following 21291714
and preceding 21291716 . In scientific notation, it is written as 2.1291715 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 17015232 positive integers (up to 21291715) that are relatively prime to 21291715.
21291715 has 8 divisors, whose sum is 25577280
The reverse of 21291715 is 51719212
Previous prime number is 3209
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million two hundred ninety-one thousand seven hundred fifteen
Scientific notation
2.1291715 × 10^7
Engineering notation
2.1291715 × 10^6
Prime Factorization
5 × 3209 × 1327
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21291715
Product of the distinct prime numbers
The prime factorization of 21291715 is 5 × 3209 × 1327.
Since it has a total of 3 prime factors.
9 , 6 , 30 , 87 , 98 , 435 , 9224 , 3764 , 3337 , 25515 , 126465 , 46849 , 7195485 , 2453477 , 66035252 , 75199298 , 286638347 , 576267378 , 5187314421 , 2213957457
n×2
42583430
n×3
63875145
n×4
85166860
n×5
106458575
n÷2
10645857.5
n÷3
7097238.3333333
n÷3
5322928.75
n÷5
4258343
n2
453337127641225
n3
9.6523249206556E+21
n4
2.05514551298E+29
n5
4.3757572545898E+36
2 √n
4614.29463732
3 √n
277.16403895264
4 √n
67.928599553649
5 √n
29.217437847141
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
-21291714
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 21291715 can be divided by 8 positive divisors.
The sum of these divisors (counting 21291715) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001110001011000011
3
Ternary
1111001201202001
4
Quaternary
1101032023003
5
Quinary
20422313330
6
Senary
2040204431
8
Octal
121161303
10
Decimal
21291715
12
Duodecimal
7169717
16
Hexadecimal
144e2c3
20
Vigesimal
6d195f
36
Base36
cocsj
md5
58c0f7130e2810832bbde76941b599df
sha1
9e890e04c83c91bed1a6d8a055d969cd46f4844e
sha256
0cf4c91b4d52f9dc8ab4fedebd5d8b5bc157e4fa64f40ca7e1637b3beca632e0
sha512
8f050086d3b644f6c9ac63914e66af6a27e128606c2874550163667b112f5a91a3d3824d22c4ada620ad3968d61901d60b370da9c1f1332dbeab03e56ebf5b1c
ripemd-160
ad01603c3805d6458f74370ff9ba75306fe9d3bc
Diameter
42583430
Circumference
133779790.85266
Area
1.4242005897972E+15
Volume
4.0431564081058E+22
Surface area
5.6968023591887E+15
Circumference
133779790.85266
Perimeter
85166860
Area
453337127641225
Diagonal
30111032.119183
Surface area
2720022765847350
Volume
9.6523249206556E+21
Space diagonal
36878332.160276
Perimeter
63875145
Area
1.9630073450798E+14
Altitude
18439166.080138
Surface area
1.9630073450798E+14
Volume
1.1375374009352E+21
Height
10037010.706394