21087250 is an even 8-digits composite number following 21087249
and preceding 21087251 . In scientific notation, it is written as 2.1087250 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 8434800 positive integers (up to 21087250) that are relatively prime to 21087250.
21087250 has 8 divisors, whose sum is 31884300
The reverse of 21087250 is 05278012
Previous prime number is 125
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million eighty-seven thousand two hundred fifty
Scientific notation
2.1087250 × 10^7
Engineering notation
2.1087250 × 10^6
Prime Factorization
2 × 125 × 84349
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21087250
Product of the distinct prime numbers
The prime factorization of 21087250 is 2 × 125 × 84349.
Since it has a total of 3 prime factors.
8 , 3 , 9 , 54 , 614 , 395 , 807 , 4709 , 20968 , 87170 , 456538 , 267636 , 9456089 , 709404 , 46951759 , 23098168 , 338902959 , 485011303 , 497339709 , 2406563515
n×2
42174500
n×3
63261750
n×4
84349000
n×5
105436250
n÷2
10543625
n÷3
7029083.3333333
n÷3
5271812.5
n÷5
4217450
n2
444672112562500
n3
9.3769120056336E+21
n4
1.977332876908E+29
n5
4.1696512708578E+36
2 √n
4592.0855828262
3 √n
276.27397879528
4 √n
67.76492885576
5 √n
29.161105853894
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
-21087249
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 21087250 can be divided by 8 positive divisors.
The sum of these divisors (counting 21087250) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011100010000010010
3
Ternary
1110200100021021
4
Quaternary
1100130100102
5
Quinary
20344243000
6
Senary
2031550054
8
Octal
120342022
10
Decimal
21087250
12
Duodecimal
708b32a
16
Hexadecimal
141c412
20
Vigesimal
6bfi2a
36
Base36
cjz0y
md5
1b7ed52c2b748fd336ba0714359e1588
sha1
53024255b46dd266e80d2155a7bbcb02899c3334
sha256
b58b759797acec87ccae202cb0589e412f810e519098a966bc247d19512f1c64
sha512
e40c50234471fe4d0612667b87a8f4b10079d0741ae407a355d9044ffef0c90feabf3ffb43efc7a2109047cefbfab15d93ae5eded70543e704d42885fde7b021
ripemd-160
e3eac384c21b38627fe0f36c6f7e1a5ffd4b9306
Diameter
42174500
Circumference
132495099.36882
Area
1.3969786420826E+15
Volume
3.9277917160342E+22
Surface area
5.5879145683304E+15
Circumference
132495099.36882
Perimeter
84349000
Area
444672112562500
Diagonal
29821874.943152
Surface area
2668032675375000
Volume
9.3769120056336E+21
Space diagonal
36524188.391907
Perimeter
63261750
Area
1.9254867291681E+14
Altitude
18262094.195953
Surface area
1.9254867291681E+14
Volume
1.1050796776288E+21
Height
9940624.9810507