20521285 is an odd 8-digits composite number following 20521284
and preceding 20521286 . In scientific notation, it is written as 2.0521285 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 16400064 positive integers (up to 20521285) that are relatively prime to 20521285.
20521285 has 8 divisors, whose sum is 24651000
The reverse of 20521285 is 58212502
Previous prime number is 1493
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million five hundred twenty-one thousand two hundred eighty-five
Scientific notation
2.0521285 × 10^7
Engineering notation
2.0521285 × 10^6
Prime Factorization
5 × 1493 × 2749
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20521285
Product of the distinct prime numbers
The prime factorization of 20521285 is 5 × 1493 × 2749.
Since it has a total of 3 prime factors.
6 , 6 , 31 , 98 , 515 , 159 , 6357 , 5231 , 95907 , 52527 , 462484 , 823978 , 3479367 , 4903179 , 75386700 , 93158458 , 802344001 , 632788801 , 5740420392 , 7061866130
n×2
41042570
n×3
61563855
n×4
82085140
n×5
102606425
n÷2
10260642.5
n÷3
6840428.3333333
n÷3
5130321.25
n÷5
4104257
n2
421123138051225
n3
8.6419879360435E+21
n4
1.7734469740211E+29
n5
3.6393410786275E+36
2 √n
4530.0424942819
3 √n
273.77987275041
4 √n
67.305590364263
5 √n
29.002865621169
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
-20521284
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 20521285 can be divided by 8 positive divisors.
The sum of these divisors (counting 20521285) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110010010000101000101
3
Ternary
1102121120220121
4
Quaternary
1032102011011
5
Quinary
20223140120
6
Senary
2011501541
8
Octal
116220505
10
Decimal
20521285
12
Duodecimal
6a578b1
16
Hexadecimal
1392145
20
Vigesimal
685345
36
Base36
c7ubp
md5
3c89fcde2d4e557ef3e09ce32b47c8af
sha1
01ce89f6a70499ab4412cb5ca1ce4f44e586a0ce
sha256
85b5eac0129919b29cc8c6901263f007ce4cdb1fc586b2b761cb0a637cb09b2f
sha512
c98c0ddcb2e6257d8a7d94bfd6bbac646e85a50fa949db850231e3c1747b2763b07152b5c2f275e3f4700b13696e61517f574efbc254bdfba49f59657a4e98ad
ripemd-160
91487906306c16ef77955142deeb1ed90ae7b128
Diameter
41042570
Circumference
128939036.39644
Area
1.3229973567584E+15
Volume
3.6199474416381E+22
Surface area
5.2919894270336E+15
Circumference
128939036.39644
Perimeter
82085140
Area
421123138051225
Diagonal
29021479.564324
Surface area
2526738828307350
Volume
8.6419879360435E+21
Space diagonal
35543908.256601
Perimeter
61563855
Area
1.8235166783689E+14
Altitude
17771954.128301
Surface area
1.8235166783689E+14
Volume
1.0184680454181E+21
Height
9673826.5214412