21025857 is an odd 8-digits composite number following 21025856
and preceding 21025858 . In scientific notation, it is written as 2.1025857 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 14017236 positive integers (up to 21025857) that are relatively prime to 21025857.
21025857 has 4 divisors, whose sum is 28034480
The reverse of 21025857 is 75852012
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million twenty-five thousand eight hundred fifty-seven
Scientific notation
2.1025857 × 10^7
Engineering notation
2.1025857 × 10^6
Prime Factorization
3 × 7008619
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21025857
Product of the distinct prime numbers
The prime factorization of 21025857 is 3 × 7008619.
Since it has a total of 2 prime factors.
3 , 9 , 78 , 33 , 292 , 887 , 638 , 6505 , 44670 , 18188 , 559392 , 840807 , 4083082 , 2968585 , 74664629 , 63742440 , 390822188 , 970978027 , 3009913062 , 9943137977
n×2
42051714
n×3
63077571
n×4
84103428
n×5
105129285
n÷2
10512928.5
n÷3
7008619
n÷3
5256464.25
n÷5
4205171.4
n2
442086662584449
n3
9.2952509491079E+21
n4
1.9544061723506E+29
n5
4.109306469976E+36
2 √n
4585.3960570489
3 √n
276.00560532619
4 √n
67.71555254924
5 √n
29.144106232755
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
-21025856
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 21025857 can be divided by 4 positive divisors.
The sum of these divisors (counting 21025857) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001101010001000001
3
Ternary
1110120020001110
4
Quaternary
1100031101001
5
Quinary
20340311412
6
Senary
2030353533
8
Octal
120152101
10
Decimal
21025857
12
Duodecimal
705b8a9
16
Hexadecimal
140d441
20
Vigesimal
6b84ch
36
Base36
cinnl
md5
585d8db3bcff457756559af4c2f0094b
sha1
73173e2105a7b1846469791154bcd3236cbaa2af
sha256
994b0483eb4a2dc1293f8ee75efe831fd9c0f18951ae3ba97fa3ae5d31bcbd6d
sha512
514b25417973e0796d61fe5aaf102a706c3407e82ea4b2cddda9c78d3bbe77b4a55e33eece21e79c9a8d0fe9c3771d1a873f612460008989254290710b817a16
ripemd-160
5d658ced6bf26e1e51194861044199b13a94d884
Diameter
42051714
Circumference
132109355.77326
Area
1.3888562114253E+15
Volume
3.8935856126654E+22
Surface area
5.5554248457013E+15
Circumference
132109355.77326
Perimeter
84103428
Area
442086662584449
Diagonal
29735052.129917
Surface area
2652519975506694
Volume
9.2952509491079E+21
Space diagonal
36417852.596678
Perimeter
63077571
Area
1.9142914023621E+14
Altitude
18208926.298339
Surface area
1.9142914023621E+14
Volume
1.0954558298241E+21
Height
9911684.0433058