21087029 is an odd 8-digits composite number following 21087028
and preceding 21087030 . In scientific notation, it is written as 2.1087029 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 20741280 positive integers (up to 21087029) that are relatively prime to 21087029.
21087029 has 4 divisors, whose sum is 21432780
The reverse of 21087029 is 92078012
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million eighty-seven thousand twenty-nine
Scientific notation
2.1087029 × 10^7
Engineering notation
2.1087029 × 10^6
Prime Factorization
61 × 345689
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21087029
Product of the distinct prime numbers
The prime factorization of 21087029 is 61 × 345689.
Since it has a total of 2 prime factors.
7 , 4 , 89 , 76 , 128 , 350 , 3035 , 2368 , 46199 , 20005 , 404597 , 710320 , 5538651 , 1831488 , 44811730 , 77440320 , 472274222 , 436973272 , 3730774783 , 8013951305
n×2
42174058
n×3
63261087
n×4
84348116
n×5
105435145
n÷2
10543514.5
n÷3
7029009.6666667
n÷3
5271757.25
n÷5
4217405.8
n2
444662792046841
n3
9.3766171911127E+21
n4
1.9772499863089E+29
n5
4.1694327801546E+36
2 √n
4592.0615196227
3 √n
276.27301365026
4 √n
67.764751306433
5 √n
29.161044730406
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
-21087028
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 21087029 can be divided by 4 positive divisors.
The sum of these divisors (counting 21087029) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011100001100110101
3
Ternary
1110200022222002
4
Quaternary
1100130030311
5
Quinary
20344241104
6
Senary
2031545045
8
Octal
120341465
10
Decimal
21087029
12
Duodecimal
708b185
16
Hexadecimal
141c335
20
Vigesimal
6bfhb9
36
Base36
cjyut
md5
06a823f5b588135c32d5871df6fe05b2
sha1
e2efd540a5ba2e74ccf5ad471b49201f90d452dc
sha256
99b90734b5893dee126aab140cfa4aa0476de0dd3ea53ecdc68b9daf93354116
sha512
cd48ac987cb8ab992f3752d76a3cc813a41d5caae769164727b29f24b4ab340589c6aae29eb745d49610c7fbcd5cf6e840dea264fdf513e8201e06278541e5d4
ripemd-160
730537939d8a74d4cafdb5f12d2029bb2b3c823c
Diameter
42174058
Circumference
132493710.78487
Area
1.3969493608191E+15
Volume
3.9276682244165E+22
Surface area
5.5877974432763E+15
Circumference
132493710.78487
Perimeter
84348116
Area
444662792046841
Diagonal
29821562.401955
Surface area
2667976752281046
Volume
9.3766171911127E+21
Space diagonal
36523805.608678
Perimeter
63261087
Area
1.9254463701514E+14
Altitude
18261902.804339
Surface area
1.9254463701514E+14
Volume
1.1050449334044E+21
Height
9940520.8006516