21087075 is an odd 8-digits composite number following 21087074
and preceding 21087076 . In scientific notation, it is written as 2.1087075 × 10^7.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 11100960 positive integers (up to 21087075) that are relatively prime to 21087075.
21087075 has 16 divisors, whose sum is 27340800
The reverse of 21087075 is 57078012
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million eighty-seven thousand seventy-five
Scientific notation
2.1087075 × 10^7
Engineering notation
2.1087075 × 10^6
Prime Factorization
5 × 15 × 79 × 3559
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21087075
Product of the distinct prime numbers
The prime factorization of 21087075 is 5 × 15 × 79 × 3559.
Since it has a total of 4 prime factors.
1 , 10 , 66 , 66 , 934 , 324 , 5630 , 4777 , 36251 , 90455 , 479189 , 2425 , 2386313 , 4190172 , 40630612 , 99344371 , 450632556 , 817124765 , 3198619328 , 8114665658
n×2
42174150
n×3
63261225
n×4
84348300
n×5
105435375
n÷2
10543537.5
n÷3
7029025
n÷3
5271768.75
n÷5
4217415
n2
444664732055625
n3
9.3766785547119E+21
n4
1.977267239341E+29
n5
4.1694782571027E+36
2 √n
4592.0665282637
3 √n
276.27321454073
4 √n
67.764788262517
5 √n
29.161057452984
1 , 5 , 15 , 75 , 79 , 395 , 1185 , 3559 , 5925 , 17795 , 53385 , 266925 , 281161 , 1405805 , 4217415 , 21087075
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21087074
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21087075 can be divided by 16 positive divisors.
The sum of these divisors (counting 21087075) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000011100001101100011
3
Ternary
1110200100000210
4
Quaternary
1100130031203
5
Quinary
20344241300
6
Senary
2031545203
8
Octal
120341543
10
Decimal
21087075
12
Duodecimal
708b203
16
Hexadecimal
141c363
20
Vigesimal
6bfhdf
36
Base36
cjyw3
md5
149481862b11caf931ad9a7da095f336
sha1
d8aa0556e0e09158889b92afa39b0b635828b213
sha256
d9569f9c313f4f655cfec0049fcd22ed71ef519afc36f1aa7233ad2b9cd42dad
sha512
b88cc814178daf7883c60ab44d7300ebe19fce0b79b85ef971adc85cfe82272fd7887b069669e67a598068a68be86eba6f270401ce1876ac4e66e908b30e5fd7
ripemd-160
91cb4bce79289e1fc7a49199c63daec9341ecda3
Diameter
42174150
Circumference
132493999.81139
Area
1.3969554555364E+15
Volume
3.9276939283408E+22
Surface area
5.5878218221457E+15
Circumference
132493999.81139
Perimeter
84348300
Area
444664732055625
Diagonal
29821627.455779
Surface area
2667988392333750
Volume
9.3766785547119E+21
Space diagonal
36523885.283015
Perimeter
63261225
Area
1.9254547706359E+14
Altitude
18261942.641508
Surface area
1.9254547706359E+14
Volume
1.1050521651739E+21
Height
9940542.4852595