21087025 is an odd 8-digits composite number following 21087024
and preceding 21087026 . In scientific notation, it is written as 2.1087025 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 16709840 positive integers (up to 21087025) that are relatively prime to 21087025.
21087025 has 8 divisors, whose sum is 22138272
The reverse of 21087025 is 52078012
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million eighty-seven thousand twenty-five
Scientific notation
2.1087025 × 10^7
Engineering notation
2.1087025 × 10^6
Prime Factorization
25 × 107 × 7883
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21087025
Product of the distinct prime numbers
The prime factorization of 21087025 is 25 × 107 × 7883.
Since it has a total of 3 prime factors.
4 , 1 , 62 , 74 , 556 , 743 , 3198 , 4862 , 32097 , 39389 , 234577 , 57407 , 2843374 , 2971703 , 21824789 , 89375139 , 912588006 , 616932648 , 5630492312 , 4947478976
n×2
42174050
n×3
63261075
n×4
84348100
n×5
105435125
n÷2
10543512.5
n÷3
7029008.3333333
n÷3
5271756.25
n÷5
4217405
n2
444662623350625
n3
9.3766118551602E+21
n4
1.9772484860506E+29
n5
4.1694288256561E+36
2 √n
4592.0610840885
3 √n
276.27299618151
4 √n
67.764748092858
5 √n
29.161043624094
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
-21087024
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 21087025 can be divided by 8 positive divisors.
The sum of these divisors (counting 21087025) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011100001100110001
3
Ternary
1110200022221221
4
Quaternary
1100130030301
5
Quinary
20344241100
6
Senary
2031545041
8
Octal
120341461
10
Decimal
21087025
12
Duodecimal
708b181
16
Hexadecimal
141c331
20
Vigesimal
6bfhb5
36
Base36
cjyup
md5
cc97d35d6cc0a756f43e1b4de90cfab4
sha1
7b901933fab8bd81c9631d8577008daa05dabf42
sha256
fcf836d8cd7915d30002a9eeb71df7cf4cc24b2bae0ce49819377faaf032ac4a
sha512
82e0dbadd7edd77ed6e99a9a4dacb99e9b07c31245c8e7fa55d14b3d9d662dc1cf21b6235f619ae60c0628761ebe046ed1b820cdd79293e2f53a3d7efafdc05d
ripemd-160
1ab905bfe68e5619906c9af47d1fe22b4a0875c1
Diameter
42174050
Circumference
132493685.65213
Area
1.3969488308443E+15
Volume
3.9276659892979E+22
Surface area
5.5877953233772E+15
Circumference
132493685.65213
Perimeter
84348100
Area
444662623350625
Diagonal
29821556.745101
Surface area
2667975740103750
Volume
9.3766118551602E+21
Space diagonal
36523798.680475
Perimeter
63261075
Area
1.9254456396754E+14
Altitude
18261899.340238
Surface area
1.9254456396754E+14
Volume
1.1050443045563E+21
Height
9940518.9150335