20687499 is an odd 8-digits composite number following 20687498
and preceding 20687500 . In scientific notation, it is written as 2.0687499 × 10^7.
The sum of its digits is 45. It has a total of 2 prime factors and 4 positive divisors.
There are 11821392 positive integers (up to 20687499) that are relatively prime to 20687499.
20687499 has 4 divisors, whose sum is 21015936
The reverse of 20687499 is 99478602
Previous prime number is 63
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
twenty million six hundred eighty-seven thousand four hundred ninety-nine
Scientific notation
2.0687499 × 10^7
Engineering notation
2.0687499 × 10^6
Prime Factorization
63 × 328373
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20687499
Product of the distinct prime numbers
The prime factorization of 20687499 is 63 × 328373.
Since it has a total of 2 prime factors.
7 , 5 , 9 , 69 , 347 , 410 , 2080 , 8640 , 28390 , 86114 , 507154 , 906180 , 3146681 , 2857277 , 28511311 , 23473800 , 779765213 , 311796063 , 2058914345 , 2840102792
n×2
41374998
n×3
62062497
n×4
82749996
n×5
103437495
n÷2
10343749.5
n÷3
6895833
n÷3
5171874.75
n÷5
4137499.8
n2
427972614875001
n3
8.853683042254E+21
n4
1.8316055908295E+29
n5
3.7891338828679E+36
2 √n
4548.3512397351
3 √n
274.51705429193
4 √n
67.441465284609
5 √n
29.049696407436
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
-20687498
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 20687499 can be divided by 4 positive divisors.
The sum of these divisors (counting 20687499) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111010101010001011
3
Ternary
1102221000220200
4
Quaternary
1032322222023
5
Quinary
20243444444
6
Senary
2015223243
8
Octal
116725213
10
Decimal
20687499
12
Duodecimal
6b17b23
16
Hexadecimal
13baa8b
20
Vigesimal
695iej
36
Base36
cbekr
md5
326926c4b86da15211f52f3f4cf38911
sha1
f4305c9a460257e28be5af6224cf2a51b69a2d2f
sha256
3ffe52c3068d88e938b3ca698aa575d4ab94f0bc6954616745a0214a8765f62a
sha512
bb53b273dc78c2018ca77a2d0e7b59d3bbeb3f683949d4415900d7577ae7539bdc1aaeebdf7049a98ec5e9751eaa4561c16b9c211eb69aeee7917662d6619473
ripemd-160
37ff5c0c68412894f9690ddbb5889a37732e4216
Diameter
41374998
Circumference
129983389.75909
Area
1.3445156228289E+15
Volume
3.7086220803677E+22
Surface area
5.3780624913157E+15
Circumference
129983389.75909
Perimeter
82749996
Area
427972614875001
Diagonal
29256541.65738
Surface area
2567835689250006
Volume
8.853683042254E+21
Space diagonal
35831799.34953
Perimeter
62062497
Area
1.853175783029E+14
Altitude
17915899.674765
Surface area
1.853175783029E+14
Volume
1.0434165529424E+21
Height
9752180.5524599