20211215 is an odd 8-digits composite number following 20211214
and preceding 20211216 . In scientific notation, it is written as 2.0211215 × 10^7.
The sum of its digits is 14. It has a total of 4 prime factors and 12 positive divisors.
There are 14927360 positive integers (up to 20211215) that are relatively prime to 20211215.
20211215 has 12 divisors, whose sum is 21639816
The reverse of 20211215 is 51211202
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 14
Digital Root 5
Name
twenty million two hundred eleven thousand two hundred fifteen
Scientific notation
2.0211215 × 10^7
Engineering notation
2.0211215 × 10^6
Prime Factorization
355 × 17 × 17 × 197
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1188895
Product of the distinct prime numbers
The prime factorization of 20211215 is 355 × 17 × 17 × 197.
Since it has a total of 4 prime factors.
1 , 8 , 30 , 97 , 7 , 816 , 947 , 6070 , 58934 , 46253 , 974387 , 692917 , 1926781 , 7000816 , 38022877 , 45996648 , 395245952 , 479758385 , 7393278109 , 4637760660
n×2
40422430
n×3
60633645
n×4
80844860
n×5
101056075
n÷2
10105607.5
n÷3
6737071.6666667
n÷3
5052803.75
n÷5
4042243
n2
408493211776225
n3
8.2561441292498E+21
n4
1.6686670406726E+29
n5
3.3725788322447E+36
2 √n
4495.688490098
3 √n
272.39396036873
4 √n
67.049895526377
5 √n
28.914686263976
1 , 17 , 197 , 289 , 355 , 3349 , 6035 , 56933 , 69935 , 102595 , 1188895 , 20211215
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20211214
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20211215 can be divided by 12 positive divisors.
The sum of these divisors (counting 20211215) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001101000110011000001111
3
Ternary
1102000211120112
4
Quaternary
1031012120033
5
Quinary
20133224330
6
Senary
2001110235
8
Octal
115063017
10
Decimal
20211215
12
Duodecimal
692837b
16
Hexadecimal
134660f
20
Vigesimal
66680f
36
Base36
c172n
md5
71d864b6b132a9235400af39917131b3
sha1
b79d02acde8be0d57bedef9bd3edeab0a5a066f3
sha256
f4392ea35b8bafc5813b48055be473c4eceb72f11936a67a92cd9086efc2492e
sha512
f331a1c933e016667682d3339784e57f4518305954a7e02643b4deab5ff8ded663232f38190d535457f4351d506f642cea961ea09dc3182c7917f8e483dbd0d3
ripemd-160
38cbb27074101f82b6b4097e5c923fc699cc6be0
Diameter
40422430
Circumference
126990809.12825
Area
1.2833192731575E+15
Volume
3.4583255657906E+22
Surface area
5.13327709263E+15
Circumference
126990809.12825
Perimeter
80844860
Area
408493211776225
Diagonal
28582974.365039
Surface area
2450959270657350
Volume
8.2561441292498E+21
Space diagonal
35006851.262698
Perimeter
60633645
Area
1.7688274933585E+14
Altitude
17503425.631349
Surface area
1.7688274933585E+14
Volume
9.7299591670767E+20
Height
9527658.1216795