18987025 is an odd 8-digits composite number following 18987024
and preceding 18987026 . In scientific notation, it is written as 1.8987025 × 10^7.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 14665280 positive integers (up to 18987025) that are relatively prime to 18987025.
18987025 has 4 divisors, whose sum is 19013940
The reverse of 18987025 is 52078981
Previous prime number is 725
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
eighteen million nine hundred eighty-seven thousand twenty-five
Scientific notation
1.8987025 × 10^7
Engineering notation
1.8987025 × 10^6
Prime Factorization
725 × 26189
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18987025
Product of the distinct prime numbers
The prime factorization of 18987025 is 725 × 26189.
Since it has a total of 2 prime factors.
8 , 8 , 100 , 45 , 704 , 47 , 4904 , 1680 , 17286 , 64391 , 479382 , 465707 , 4155808 , 1010656 , 57081950 , 93760266 , 519050132 , 767625183 , 9585374027 , 2274958602
n×2
37974050
n×3
56961075
n×4
75948100
n×5
94935125
n÷2
9493512.5
n÷3
6329008.3333333
n÷3
4746756.25
n÷5
3797405
n2
360507118350625
n3
6.8449576688013E+21
n4
1.2996538238147E+29
n5
2.4676559644116E+36
2 √n
4357.4103547864
3 √n
266.77940979226
4 √n
66.010683641259
5 √n
28.555606220695
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
-18987024
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 18987025 can be divided by 4 positive divisors.
The sum of these divisors (counting 18987025) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001000011011100000010001
3
Ternary
1022201122022011
4
Quaternary
1020123200101
5
Quinary
14330041100
6
Senary
1514542521
8
Octal
110334021
10
Decimal
18987025
12
Duodecimal
6437a41
16
Hexadecimal
121b811
20
Vigesimal
5id7b5
36
Base36
bayhd
md5
ac3354497298017dd03cd51ffe8a0f41
sha1
da2d901c2714b0b2c5fb62d9f7377d0fe9e95b58
sha256
77812e8a0f37494981710deb226350dbe6b09f300ad02816bdd714e2dcbac87c
sha512
ed66479905d08fcabf64aac970e9b8aea0222b63ef9c67e3ced06f9ab138da31ccacbdf7a82bfe5c6e60884414801345ca9e0858f44e78cbcb2480882d45aedd
ripemd-160
cc4e885b90bf5fde82f04b8f0c7e0d5bbb947096
Diameter
37974050
Circumference
119298996.50705
Area
1.1325665145771E+15
Volume
2.8672091635252E+22
Surface area
4.5302660583086E+15
Circumference
119298996.50705
Perimeter
75948100
Area
360507118350625
Diagonal
26851708.264117
Surface area
2163042710103750
Volume
6.8449576688013E+21
Space diagonal
32886491.98458
Perimeter
56961075
Area
1.5610416136838E+14
Altitude
16443245.99229
Surface area
1.5610416136838E+14
Volume
8.0668599742404E+20
Height
8950569.4213723