20921715 is an odd 8-digits composite number following 20921714
and preceding 20921716 . In scientific notation, it is written as 2.0921715 × 10^7.
The sum of its digits is 27. It has a total of 2 prime factors and 4 positive divisors.
There are 11158224 positive integers (up to 20921715) that are relatively prime to 20921715.
20921715 has 4 divisors, whose sum is 21386688
The reverse of 20921715 is 51712902
Previous prime number is 45
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million nine hundred twenty-one thousand seven hundred fifteen
Scientific notation
2.0921715 × 10^7
Engineering notation
2.0921715 × 10^6
Prime Factorization
45 × 464927
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921715
Product of the distinct prime numbers
The prime factorization of 20921715 is 45 × 464927.
Since it has a total of 2 prime factors.
10 , 2 , 34 , 48 , 580 , 191 , 4670 , 3171 , 79411 , 87321 , 219983 , 431933 , 8536470 , 1406582 , 85949264 , 21485029 , 419032351 , 568210500 , 8654700281 , 1132416223
n×2
41843430
n×3
62765145
n×4
83686860
n×5
104608575
n÷2
10460857.5
n÷3
6973905
n÷3
5230428.75
n÷5
4184343
n2
437718158541225
n3
9.1578145633243E+21
n4
1.9159718631672E+29
n5
4.0085417269203E+36
2 √n
4574.0261258546
3 √n
275.54916157433
4 √n
67.631546824352
5 √n
29.115178454086
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
-20921714
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 20921715 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921715) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011110101110011
3
Ternary
1110100221012100
4
Quaternary
1033303311303
5
Quinary
20323443330
6
Senary
2024231443
8
Octal
117636563
10
Decimal
20921715
12
Duodecimal
700b583
16
Hexadecimal
13f3d73
20
Vigesimal
6af45f
36
Base36
cgfar
md5
bf6445a2479bc5995ca926db0a6b5868
sha1
483177a5a3880281fa4e68adb3ff137eb07dc5e4
sha256
a8d4e74815fee4e3a28277594cdeab8163b5910e3c699bd790b77fc2a220bbf4
sha512
e8b8f36dcb55345eb4ba7650ca8e5d9c7af98f898b5552efbf5210dc4fa17300759580864dd758ebe22783fd927d0b09ac3c2d54a10803c69afecb6e4074dd38
ripemd-160
0bfe1e0021f85a7bd5c8b026f83a7aa51b216638
Diameter
41843430
Circumference
131455012.289
Area
1.375132151216E+15
Volume
3.8360163940103E+22
Surface area
5.5005286048639E+15
Circumference
131455012.289
Perimeter
83686860
Area
437718158541225
Diagonal
29587773.101105
Surface area
2626308951247350
Volume
9.1578145633243E+21
Space diagonal
36237473.361476
Perimeter
62765145
Area
1.8953752249722E+14
Altitude
18118736.680738
Surface area
1.8953752249722E+14
Volume
1.0792587964293E+21
Height
9862591.0337015