20921289 is an odd 8-digits composite number following 20921288
and preceding 20921290 . In scientific notation, it is written as 2.0921289 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 13756320 positive integers (up to 20921289) that are relatively prime to 20921289.
20921289 has 8 divisors, whose sum is 28277472
The reverse of 20921289 is 98212902
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty million nine hundred twenty-one thousand two hundred eighty-nine
Scientific notation
2.0921289 × 10^7
Engineering notation
2.0921289 × 10^6
Prime Factorization
73 × 3 × 95531
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921289
Product of the distinct prime numbers
The prime factorization of 20921289 is 73 × 3 × 95531.
Since it has a total of 3 prime factors.
7 , 9 , 18 , 91 , 959 , 909 , 6560 , 9437 , 8356 , 81872 , 28122 , 808906 , 8431902 , 7840048 , 10140657 , 85453562 , 374514628 , 538743777 , 8365401890 , 3863968462
n×2
41842578
n×3
62763867
n×4
83685156
n×5
104606445
n÷2
10460644.5
n÷3
6973763
n÷3
5230322.25
n÷5
4184257.8
n2
437700333421521
n3
9.157255170908E+21
n4
1.9158158187731E+29
n5
4.0081336415324E+36
2 √n
4573.9795583277
3 √n
275.54729135258
4 √n
67.631202549768
5 √n
29.115059886683
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
-20921288
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 20921289 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921289) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011101111001001
3
Ternary
1110100220121120
4
Quaternary
1033303233021
5
Quinary
20323440124
6
Senary
2024225453
8
Octal
117635711
10
Decimal
20921289
12
Duodecimal
700b289
16
Hexadecimal
13f3bc9
20
Vigesimal
6af349
36
Base36
cgeyx
md5
5e032d804212c2169dbbc5b53b271700
sha1
73a1b6eedb3c2b3ea5513887130ba6df74be8d08
sha256
b0b2e4897da6146f1144c7b44890cb29f25bf5ac31e9fa8ea29aaa535f0c5b41
sha512
348c2d9acbd231e65b7b5c235566e327e16c5ed39e20e76ada30fa8720c41538f981749add1b92f82953dd171d2417a96af46692ae977705db92a2b66a572d58
ripemd-160
c90cce05f90464ecf2369c5a171e2a198438de09
Diameter
41842578
Circumference
131452335.65206
Area
1.3750761519509E+15
Volume
3.8357820762629E+22
Surface area
5.5003046078034E+15
Circumference
131452335.65206
Perimeter
83685156
Area
437700333421521
Diagonal
29587170.646127
Surface area
2626202000529126
Volume
9.157255170908E+21
Space diagonal
36236735.507832
Perimeter
62763867
Area
1.8952980399398E+14
Altitude
18118367.753916
Surface area
1.8952980399398E+14
Volume
1.0791928714008E+21
Height
9862390.2153757