18442821 is an odd 8-digits composite number following 18442820
and preceding 18442822 . In scientific notation, it is written as 1.8442821 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 12295212 positive integers (up to 18442821) that are relatively prime to 18442821.
18442821 has 4 divisors, whose sum is 24590432
The reverse of 18442821 is 12824481
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
eighteen million four hundred forty-two thousand eight hundred twenty-one
Scientific notation
1.8442821 × 10^7
Engineering notation
1.8442821 × 10^6
Prime Factorization
3 × 6147607
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18442821
Product of the distinct prime numbers
The prime factorization of 18442821 is 3 × 6147607.
Since it has a total of 2 prime factors.
8 , 3 , 88 , 90 , 28 , 689 , 643 , 9170 , 7784 , 53751 , 987714 , 477048 , 9132734 , 8843254 , 99313249 , 99084027 , 129304125 , 654429223 , 570405426 , 5517302137
n×2
36885642
n×3
55328463
n×4
73771284
n×5
92214105
n÷2
9221410.5
n÷3
6147607
n÷3
4610705.25
n÷5
3688564.2
n2
340137646438041
n3
6.2730977286181E+21
n4
1.1569361852441E+29
n5
2.133716697288E+36
2 √n
4294.510565827
3 √n
264.20586273119
4 √n
65.532515332673
5 √n
28.390005079619
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
-18442820
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 18442821 can be divided by 4 positive divisors.
The sum of these divisors (counting 18442821) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000110010110101001000101
3
Ternary
1021200222210110
4
Quaternary
1012112221011
5
Quinary
14210132241
6
Senary
1455143233
8
Octal
106265105
10
Decimal
18442821
12
Duodecimal
6214b19
16
Hexadecimal
1196a45
20
Vigesimal
5f5711
36
Base36
azakl
md5
6f12c6470fab27620c02740f68be1898
sha1
84283cb447cc3cf1814a43fec594e95b2308dc24
sha256
e6439645ec2b7b82e5fde22047b5273168932562783b5754ceb6e11942b0d002
sha512
6d47d06a43393055d6934be181d2e3facfe1416a2ddc79fa822f1c4c31015ee471787d23a2a3b2466bf82ee147d921445c18f59b4c2e1a7c64d81964ab864b3e
ripemd-160
868f0475a2950a5a39740ee8fc79327505d757e6
Diameter
36885642
Circumference
115879661.93014
Area
1.0685739312591E+15
Volume
2.6276690319303E+22
Surface area
4.2742957250363E+15
Circumference
115879661.93014
Perimeter
73771284
Area
340137646438041
Diagonal
26082087.586619
Surface area
2040825878628246
Volume
6.2730977286181E+21
Space diagonal
31943903.006898
Perimeter
55328463
Area
1.472839212994E+14
Altitude
15971951.503449
Surface area
1.472839212994E+14
Volume
7.3929165715863E+20
Height
8694029.1955398