20989857 is an odd 8-digits composite number following 20989856
and preceding 20989858 . In scientific notation, it is written as 2.0989857 × 10^7.
The sum of its digits is 48. It has a total of 2 prime factors and 4 positive divisors.
There are 11948160 positive integers (up to 20989857) that are relatively prime to 20989857.
20989857 has 4 divisors, whose sum is 20999316
The reverse of 20989857 is 75898902
Previous prime number is 5901
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3
Name
twenty million nine hundred eighty-nine thousand eight hundred fifty-seven
Scientific notation
2.0989857 × 10^7
Engineering notation
2.0989857 × 10^6
Prime Factorization
5901 × 3557
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20989857
Product of the distinct prime numbers
The prime factorization of 20989857 is 5901 × 3557.
Since it has a total of 2 prime factors.
7 , 3 , 32 , 21 , 940 , 97 , 2831 , 9026 , 78632 , 28329 , 728651 , 341748 , 1026292 , 2218489 , 72121819 , 29949265 , 40961760 , 891854492 , 3777208185 , 3586822160
n×2
41979714
n×3
62969571
n×4
83959428
n×5
104949285
n÷2
10494928.5
n÷3
6996619
n÷3
5247464.25
n÷5
4197971.4
n2
440574096880449
n3
9.2475872914248E+21
n4
1.9410553484202E+29
n5
4.0742474192426E+36
2 √n
4581.4688692602
3 √n
275.84799180555
4 √n
67.68654865821
5 √n
29.134119413937
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
-20989856
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 20989857 can be divided by 4 positive divisors.
The sum of these divisors (counting 20989857) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000100011110100001
3
Ternary
1110111101200010
4
Quaternary
1100010132201
5
Quinary
20333133412
6
Senary
2025515133
8
Octal
120043641
10
Decimal
20989857
12
Duodecimal
7042aa9
16
Hexadecimal
14047a1
20
Vigesimal
6b3ech
36
Base36
chvvl
md5
33e06fdd229b760b3b53b65f68f48b32
sha1
4822f36e472c7916fc1fbc7298c412d268a63be2
sha256
b58116e4ada3b828ab3b641e7033c4c4795812816059a2feb6ed27da2e1cd3a3
sha512
18a4788a41cd366952493af6c667ff1ee82a7994bc4ef7c0236549093a6f9ab0bef459615f615d4e5055820d0d95e6669de111fd980b425a40c54496fed785c5
ripemd-160
62705256608ca97ce5c47982c392d12342cdd63c
Diameter
41979714
Circumference
131883161.1022
Area
1.3841043461216E+15
Volume
3.8736203064227E+22
Surface area
5.5364173844863E+15
Circumference
131883161.1022
Perimeter
83959428
Area
440574096880449
Diagonal
29684140.441672
Surface area
2643444581282694
Volume
9.2475872914248E+21
Space diagonal
36355498.767605
Perimeter
62969571
Area
1.9077418007393E+14
Altitude
18177749.383803
Surface area
1.9077418007393E+14
Volume
1.0898386138968E+21
Height
9894713.4805573