21551806 is an even 8-digits composite number following 21551805
and preceding 21551807 . In scientific notation, it is written as 2.1551806 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 10764600 positive integers (up to 21551806) that are relatively prime to 21551806.
21551806 has 8 divisors, whose sum is 32361624
The reverse of 21551806 is 60815512
Previous prime number is 1051
Is Prime? no
Number parity even
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million five hundred fifty-one thousand eight hundred six
Scientific notation
2.1551806 × 10^7
Engineering notation
2.1551806 × 10^6
Prime Factorization
2 × 1051 × 10253
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21551806
Product of the distinct prime numbers
The prime factorization of 21551806 is 2 × 1051 × 10253.
Since it has a total of 3 prime factors.
5 , 5 , 70 , 62 , 697 , 352 , 2961 , 5264 , 82852 , 38276 , 219935 , 839734 , 1318512 , 253713 , 69486446 , 62681066 , 634050558 , 818837637 , 1173617892 , 6392686711
n×2
43103612
n×3
64655418
n×4
86207224
n×5
107759030
n÷2
10775903
n÷3
7183935.3333333
n÷3
5387951.5
n÷5
4310361.2
n2
464480341861636
n3
1.0010390218616E+22
n4
2.157419879759E+29
n5
4.649629470911E+36
2 √n
4642.3922712326
3 √n
278.28804917438
4 √n
68.135103076407
5 √n
29.288473280433
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
-21551805
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 21551806 can be divided by 8 positive divisors.
The sum of these divisors (counting 21551806) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001101101010111110
3
Ternary
1111112221112001
4
Quaternary
1102031222332
5
Quinary
21004124211
6
Senary
2045532514
8
Octal
122155276
10
Decimal
21551806
12
Duodecimal
727413a
16
Hexadecimal
148dabe
20
Vigesimal
6edja6
36
Base36
ctxha
md5
f03c1378f6b35976a8240ca5b2137096
sha1
1123267983092fca343b546bf358e914adedcb20
sha256
6bef7a778b90af5b3866220762d86cd23889faa00cc030d102d45e2b63aa6a77
sha512
94cf96d910ebd5f57422a9ccf8d9ee1e2c2c05a03dd096901ef494c45a160e39734cce45295a1980f7f1cf38ac40980dc1a1bd889380e78b5191bd29985816a9
ripemd-160
1827598fc1814eb954cc768332f666e05baaa3c3
Diameter
43103612
Circumference
135413990.80238
Area
1.4592080297294E+15
Volume
4.1931424493827E+22
Surface area
5.8368321189176E+15
Circumference
135413990.80238
Perimeter
86207224
Area
464480341861636
Diagonal
30478856.338834
Surface area
2786882051169816
Volume
1.0010390218616E+22
Space diagonal
37328822.986868
Perimeter
64655418
Area
2.0112588780533E+14
Altitude
18664411.493434
Surface area
2.0112588780533E+14
Volume
1.1797358009844E+21
Height
10159618.779611