18442921 is an odd 8-digits composite number following 18442920
and preceding 18442922 . In scientific notation, it is written as 1.8442921 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 15768960 positive integers (up to 18442921) that are relatively prime to 18442921.
18442921 has 8 divisors, whose sum is 21129984
The reverse of 18442921 is 12924481
Previous prime number is 431
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
eighteen million four hundred forty-two thousand nine hundred twenty-one
Scientific notation
1.8442921 × 10^7
Engineering notation
1.8442921 × 10^6
Prime Factorization
7 × 431 × 6113
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18442921
Product of the distinct prime numbers
The prime factorization of 18442921 is 7 × 431 × 6113.
Since it has a total of 3 prime factors.
7 , 1 , 41 , 71 , 406 , 959 , 374 , 2486 , 17496 , 96130 , 980763 , 890172 , 2061128 , 7473380 , 81645998 , 98911737 , 558482641 , 768006042 , 4982493922 , 3786144626
n×2
36885842
n×3
55328763
n×4
73771684
n×5
92214605
n÷2
9221460.5
n÷3
6147640.3333333
n÷3
4610730.25
n÷5
3688584.2
n2
340141335012241
n3
6.2731997704653E+21
n4
1.1569612778391E+29
n5
2.1337745447245E+36
2 √n
4294.5222085815
3 √n
264.20634025284
4 √n
65.532604164504
5 √n
28.390035866605
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
-18442920
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 18442921 can be divided by 8 positive divisors.
The sum of these divisors (counting 18442921) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000110010110101010101001
3
Ternary
1021200222221011
4
Quaternary
1012112222221
5
Quinary
14210133141
6
Senary
1455143521
8
Octal
106265251
10
Decimal
18442921
12
Duodecimal
6214ba1
16
Hexadecimal
1196aa9
20
Vigesimal
5f5761
36
Base36
azand
md5
9c8cfe74ef1b4708cc368827c62a2683
sha1
cf562f83cf017b8d262e513ba2704cd2ae3c27cd
sha256
2f22fecc1d170da48f4fd9b77a66123b9806f240208c68679cdb6180c65d3a73
sha512
0cb2cc20fbd0860fa3aeb32fe5e17297d38947b36b9719d2f269855575caef2332f3b33b2cc01eb8d453f2b67de6c964c458cf41f9c7bef958b87302c08dff6c
ripemd-160
804aba943748d9355623c7b090a75b1dcd409c99
Diameter
36885842
Circumference
115880290.24867
Area
1.0685855192567E+15
Volume
2.6277117751193E+22
Surface area
4.2743420770267E+15
Circumference
115880290.24867
Perimeter
73771684
Area
340141335012241
Diagonal
26082229.007976
Surface area
2040848010073446
Volume
6.2731997704653E+21
Space diagonal
31944076.211979
Perimeter
55328763
Area
1.4728551849888E+14
Altitude
15972038.10599
Surface area
1.4728551849888E+14
Volume
7.3930368290565E+20
Height
8694076.3359919