18485721 is an odd 8-digits composite number following 18485720
and preceding 18485722 . In scientific notation, it is written as 1.8485721 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 11787864 positive integers (up to 18485721) that are relatively prime to 18485721.
18485721 has 8 divisors, whose sum is 25005120
The reverse of 18485721 is 12758481
Previous prime number is 69
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighteen million four hundred eighty-five thousand seven hundred twenty-one
Scientific notation
1.8485721 × 10^7
Engineering notation
1.8485721 × 10^6
Prime Factorization
3 × 69 × 89303
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18485721
Product of the distinct prime numbers
The prime factorization of 18485721 is 3 × 69 × 89303.
Since it has a total of 3 prime factors.
10 , 9 , 31 , 49 , 440 , 429 , 4191 , 2810 , 43345 , 53892 , 679980 , 291253 , 6652443 , 7891839 , 4803538 , 37069734 , 473314485 , 859427738 , 2171337461 , 8465396654
n×2
36971442
n×3
55457163
n×4
73942884
n×5
92428605
n÷2
9242860.5
n÷3
6161907
n÷3
4621430.25
n÷5
3697144.2
n2
341721880889841
n3
6.3169753497248E+21
n4
1.1677384387889E+29
n5
2.1586486980427E+36
2 √n
4299.5024130706
3 √n
264.41056125099
4 √n
65.570591068486
5 √n
28.403200453374
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
-18485720
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 18485721 can be divided by 8 positive divisors.
The sum of these divisors (counting 18485721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000110100001000111011001
3
Ternary
1021210011122100
4
Quaternary
1012201013121
5
Quinary
14213020341
6
Senary
1500114013
8
Octal
106410731
10
Decimal
18485721
12
Duodecimal
6235909
16
Hexadecimal
11a11d9
20
Vigesimal
5fae61
36
Base36
b07o9
md5
867f4630d6475bcc207f542b0096a0a0
sha1
593dffbc713c470a86d243377bb91379821928e2
sha256
bff7e0719fdb03a14cb68a3d7ed9701106ac912b3b669cf2a1e6b7058fb596bf
sha512
9a86cdef9157c9c43bb065ba8aa1aa62deabe58b0e201d559a49b8f89f5b4e88eb0d4986eb3d95d157b5000b2f78d745830e7c2af218ac3afba5400c50f61665
ripemd-160
ae8c56fb9150600f750b22d1b55a4450abdd1787
Diameter
36971442
Circumference
116149210.57982
Area
1.0735509505744E+15
Volume
2.6460484468804E+22
Surface area
4.2942038022976E+15
Circumference
116149210.57982
Perimeter
73942884
Area
341721880889841
Diagonal
26142757.348445
Surface area
2050331285339046
Volume
6.3169753497248E+21
Space diagonal
32018207.986543
Perimeter
55457163
Area
1.479699149398E+14
Altitude
16009103.993271
Surface area
1.479699149398E+14
Volume
7.4446268439645E+20
Height
8714252.4494817