81952018 is an even 8-digits composite number following 81952017
and preceding 81952019 . In scientific notation, it is written as 8.1952018 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 40976008 positive integers (up to 81952018) that are relatively prime to 81952018.
81952018 has 4 divisors, whose sum is 122928030
The reverse of 81952018 is 81025918
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 34
Digital Root 7
Name
eighty-one million nine hundred fifty-two thousand eighteen
Scientific notation
8.1952018 × 10^7
Engineering notation
8.1952018 × 10^6
Prime Factorization
2 × 40976009
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81952018
Product of the distinct prime numbers
The prime factorization of 81952018 is 2 × 40976009.
Since it has a total of 2 prime factors.
9 , 4 , 66 , 30 , 63 , 311 , 692 , 8556 , 1504 , 75865 , 208096 , 56118 , 3263900 , 169539 , 70143311 , 26814231 , 974572528 , 880836105 , 1348068263 , 3274254948
n×2
163904036
n×3
245856054
n×4
327808072
n×5
409760090
n÷2
40976009
n÷3
27317339.333333
n÷3
20488004.5
n÷5
16390403.6
n2
6716133254272324
n3
5.5040067334452E+23
n4
4.5106445889143E+31
n5
3.696564265423E+39
2 √n
9052.7353877157
3 √n
434.36339346176
4 √n
95.145863744651
5 √n
38.257089806867
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
-81952017
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 81952018 can be divided by 4 positive divisors.
The sum of these divisors (counting 81952018) is 1, the average is 0.25.
Base
System
Value
2
Binary
100111000100111110100010010
3
Ternary
12201012121000221
4
Quaternary
10320213310102
5
Quinary
131434431033
6
Senary
12044303254
8
Octal
470476422
10
Decimal
81952018
12
Duodecimal
23541b2a
16
Hexadecimal
4e27d12
20
Vigesimal
15c400i
36
Base36
1csiky
md5
bb3184a16794dd0cd14d0274d4aebfc0
sha1
19bec255e2eebf057b30630e96b61773082968be
sha256
33554a136684ea7b4716e5c2dab4937c6acc684416f5a6e83febd60f4d5a0a20
sha512
42dd22e6a1cfb712c278bdbe298a2d989aa9596e06027c480ad98eaa8af7e7a8ea1336a7877d8676e460534f012bb3bf45d8cc4c93f11b9f158a85d0f22d41a1
ripemd-160
313f8b67903f6413847eac8501fc636de53eac54
Diameter
163904036
Circumference
514919715.39132
Area
2.1099354892152E+16
Volume
2.3055129492134E+24
Surface area
8.4397419568608E+16
Circumference
514919715.39132
Perimeter
327808072
Area
6716133254272324
Diagonal
115897655.31944
Surface area
40296799525633944
Volume
5.5040067334452E+23
Space diagonal
141945058.9588
Perimeter
245856054
Area
2.9081710067006E+15
Altitude
70972529.4794
Surface area
2.9081710067006E+15
Volume
6.4865341415259E+22
Height
38632551.773148