18993721 is an odd 8-digits prime number following 18993720
and preceding 18993722 . In scientific notation, it is written as 1.8993721 × 10^7.
The sum of its digits is 40. It has a total of 1 prime factors and 2 positive divisors.
There are 18993720 positive integers (up to 18993721) that are relatively prime to 18993721.
18993721 has 2 divisors, whose sum is 18993722
The reverse of 18993721 is 12739981
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 40 Digital Root 4
Name
eighteen million nine hundred ninety-three thousand seven hundred twenty-one
Scientific notation
1.8993721 × 10^7
Engineering notation
1.8993721 × 10^6
Prime Factorization
18993721
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
18993721 Product of the distinct prime numbers
The prime factorization of 18993721 is 18993721.
Since it has a total of 1 prime factors.
8 , 1 , 45 , 5 , 533 , 369 , 838 , 4514 , 11625 , 22933 , 692416 , 182043 , 6398628 , 8294261 , 83046977 , 79640875 , 933850370 , 703843363 , 1295624930 , 2379973665
n×2
37987442
n×3
56981163
n×4
75974884
n×5
94968605
n÷2
9496860.5
n÷3
6331240.3333333
n÷3
4748430.25
n÷5
3798744.2
n2
360761437425841
n3
6.8522020900254E+21
n4
1.3014881473356E+29
n5
2.4720102755299E+36
2 √n4358.1786333284
3 √n266.81076708276
4 √n66.016502734759
5 √n28.557620031413
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
18993722 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
9496861 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4358.1787480552 Returns the nth root of the product of n divisors
H Harmonic Mean
1.999999894702 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18993721 can be divided by 2 positive divisors.
The sum of these divisors (counting 18993721) is 18993722, the average is 9496861.
Base
System
Value
2
Binary
1001000011101001000111001
3
Ternary
1022201222111011
4
Quaternary
1020131020321
5
Quinary
14330244341
6
Senary
1515033521
8
Octal
110351071
10
Decimal
18993721
12
Duodecimal
643b8a1
16
Hexadecimal
121d239
20
Vigesimal
5ie461
36
Base36
bb3nd
md5
1da6fec469d495f2b546d2f09f3c3a0f
sha1
45b3152a47fb6299fe7d928ad75d9fe1fe08aa7e
sha256
3a7325672024a06f6f4eb84156b12f59015504dadf372e4dfb5dc061f899edb4
sha512
c8eaf1ae5604e65ef917d2317162290f0b6c64036a75021c64bc22a19466b282cc1ffa38f9fe00e4a4be219167706851bf2d13ddc974b381ec9a5f9555d748b4
ripemd-160
a8321db80586a258940a80c1fed3aebf84f8234b
Diameter
37987442
Circumference
119341068.71587
Area
1.1333654815155E+15
Volume
2.8702436995915E+22
Surface area
4.5334619260621E+15
Circumference
119341068.71587
Perimeter
75974884
Area
360761437425841
Diagonal
26861177.838131
Surface area
2164568624555046
Volume
6.8522020900254E+21
Space diagonal
32898089.796788
Perimeter
56981163
Area
1.5621428475828E+14
Altitude
16449044.898394
Surface area
1.5621428475828E+14
Volume
8.0753976065293E+20
Height
8953725.9460436