20985239 is an odd 8-digits composite number following 20985238
and preceding 20985240 . In scientific notation, it is written as 2.0985239 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 19077480 positive integers (up to 20985239) that are relatively prime to 20985239.
20985239 has 4 divisors, whose sum is 22893000
The reverse of 20985239 is 93258902
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty million nine hundred eighty-five thousand two hundred thirty-nine
Scientific notation
2.0985239 × 10^7
Engineering notation
2.0985239 × 10^6
Prime Factorization
11 × 1907749
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20985239
Product of the distinct prime numbers
The prime factorization of 20985239 is 11 × 1907749.
Since it has a total of 2 prime factors.
6 , 6 , 84 , 28 , 244 , 38 , 5607 , 5254 , 45831 , 91621 , 403780 , 980661 , 8280392 , 4441528 , 48233241 , 94404628 , 984245970 , 776994124 , 9617732771 , 9522340195
n×2
41970478
n×3
62955717
n×4
83940956
n×5
104926195
n÷2
10492619.5
n÷3
6995079.6666667
n÷3
5246309.75
n÷5
4197047.8
n2
440380255887121
n3
9.2414849206724E+21
n4
1.9393476977521E+29
n5
4.0697674941427E+36
2 √n
4580.9648547004
3 √n
275.82776045509
4 √n
67.682825404237
5 √n
29.132837335596
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
-20985238
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 20985239 can be divided by 4 positive divisors.
The sum of these divisors (counting 20985239) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000011010110010111
3
Ternary
1110111011100002
4
Quaternary
1100003112113
5
Quinary
20333011424
6
Senary
2025441515
8
Octal
120032627
10
Decimal
20985239
12
Duodecimal
704029b
16
Hexadecimal
1403597
20
Vigesimal
6b331j
36
Base36
chsbb
md5
9f0056a7c697ef0d3cd8fbba61763bb0
sha1
c0f449b989f5cff3a37c915738b45a54d2cd6619
sha256
419fd5ca5bb970d20d3701eb6af46f446942babc7943fdc180efa14bb38ac617
sha512
27109f828f397af1237ec606df1eba54d4a4eb53c04052273351971411892d70292e7be72848ede7a948e936d45bc197b03220da14552284b72acbd7dc889c41
ripemd-160
155fdb77f227e9427c77b3bbf2958a2ec368e42f
Diameter
41970478
Circumference
131854145.35245
Area
1.383495376681E+15
Volume
3.8710641513394E+22
Surface area
5.5339815067239E+15
Circumference
131854145.35245
Perimeter
83940956
Area
440380255887121
Diagonal
29677609.603441
Surface area
2642281535322726
Volume
9.2414849206724E+21
Space diagonal
36347500.156976
Perimeter
62955717
Area
1.9069024446167E+14
Altitude
18173750.078488
Surface area
1.9069024446167E+14
Volume
1.0891194426068E+21
Height
9892536.5344803