18886989 is an odd 8-digits composite number following 18886988
and preceding 18886990 . In scientific notation, it is written as 1.8886989 × 10^7.
The sum of its digits is 57. It has a total of 3 prime factors and 8 positive divisors.
There are 11446640 positive integers (up to 18886989) that are relatively prime to 18886989.
18886989 has 8 divisors, whose sum is 27472032
The reverse of 18886989 is 98968881
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 57
Digital Root 3
Name
eighteen million eight hundred eighty-six thousand nine hundred eighty-nine
Scientific notation
1.8886989 × 10^7
Engineering notation
1.8886989 × 10^6
Prime Factorization
3 × 11 × 572333
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18886989
Product of the distinct prime numbers
The prime factorization of 18886989 is 3 × 11 × 572333.
Since it has a total of 3 prime factors.
3 , 4 , 94 , 29 , 783 , 465 , 3622 , 3420 , 7805 , 68863 , 114083 , 160124 , 8806710 , 7217612 , 50337387 , 23866369 , 541798590 , 340550279 , 7462991182 , 4087984077
n×2
37773978
n×3
56660967
n×4
75547956
n×5
94434945
n÷2
9443494.5
n÷3
6295663
n÷3
4721747.25
n÷5
3777397.8
n2
356718353486121
n3
6.7373356183905E+21
n4
1.2724798371385E+29
n5
2.4033312686756E+36
2 √n
4345.9163590663
3 √n
266.31006205216
4 √n
65.923564520331
5 √n
28.525452704048
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
-18886988
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 18886989 can be divided by 8 positive divisors.
The sum of these divisors (counting 18886989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001000000011000101001101
3
Ternary
1022112120002010
4
Quaternary
1020003011031
5
Quinary
14313340424
6
Senary
1512451433
8
Octal
110030515
10
Decimal
18886989
12
Duodecimal
63a9b79
16
Hexadecimal
120314d
20
Vigesimal
5i0h99
36
Base36
b8tal
md5
87f5044873607c031f573e1fb6f33248
sha1
54472674635b7be17ac50f37a0938886343af16b
sha256
35a0f3d25b8ffdba586684751099f6184c92fbc7b5c7a7bc75a688b39b2aade3
sha512
d8a98089f15944c73f5b562943142ca1408ecec6662800a60a7ce7e4e6dcbb47079a8ed9a4423f149d2749db8831ed946e7f74572e923223152e5f4cde2b01a7
ripemd-160
32f12ad153553adfb0263b647b0bf974cf57f8e9
Diameter
37773978
Circumference
118670451.78166
Area
1.1206637587126E+15
Volume
2.8221285444673E+22
Surface area
4.4826550348506E+15
Circumference
118670451.78166
Perimeter
75547956
Area
356718353486121
Diagonal
26710235.996191
Surface area
2140310120916726
Volume
6.7373356183905E+21
Space diagonal
32713224.549994
Perimeter
56660967
Area
1.5446357805757E+14
Altitude
16356612.274997
Surface area
1.5446357805757E+14
Volume
7.9400261714893E+20
Height
8903411.9987305