81445836 is an even 8-digits composite number following 81445835
and preceding 81445837 . In scientific notation, it is written as 8.1445836 × 10^7.
The sum of its digits is 39. It has a total of 5 prime factors and 24 positive divisors.
There are 27123712 positive integers (up to 81445836) that are relatively prime to 81445836.
81445836 has 24 divisors, whose sum is 190214640
The reverse of 81445836 is 63854418
Previous prime number is 1409
Is Prime? no Number parity even Number length 8 Sum of Digits 39 Digital Root 3
Name
eighty-one million four hundred forty-five thousand eight hundred thirty-six
Scientific notation
8.1445836 × 10^7
Engineering notation
8.1445836 × 10^6
Prime Factorization
2 × 2 × 3 × 1409 × 4817
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
40722918 Product of the distinct prime numbers
The prime factorization of 81445836 is 2 × 2 × 3 × 1409 × 4817.
Since it has a total of 5 prime factors.
7 , 2 , 2 , 40 , 236 , 874 , 1830 , 3785 , 46609 , 53677 , 615301 , 121882 , 1178109 , 9932184 , 664384 , 13172195 , 873706987 , 731171308 , 3040436507 , 2350081299
n×2
162891672
n×3
244337508
n×4
325783344
n×5
407229180
n÷2
40722918
n÷3
27148612
n÷3
20361459
n÷5
16289167.2
n2
6633424201738896
n3
5.4026477965326E+23
n4
4.4002316640215E+31
n5
3.583805464699E+39
2 √n9024.7346775404
3 √n433.46725459697
4 √n94.998603555739
5 √n38.209713128214
1 , 2 , 3 , 4 , 6 , 12 , 1409 , 2818 , 4227 , 4817 , 5636 , 8454 , 9634 , 14451 , 16908 , 19268 , 28902 , 57804 , 6787153 , 13574306 , 20361459 , 27148612 , 40722918 , 81445836
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-81445835 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81445836 can be divided by 24 positive divisors.
The sum of these divisors (counting 81445836) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100110110101100001111001100
3
Ternary
12200020212200110
4
Quaternary
10312230033030
5
Quinary
131322231321
6
Senary
12025400020
8
Octal
466541714
10
Decimal
81445836
12
Duodecimal
23339010
16
Hexadecimal
4dac3cc
20
Vigesimal
1590ebg
36
Base36
1cho0c
md5
54676b15b6821f0e87dbe06ca238e91c
sha1
5ead7b5d9ef0a937a1c25dc5b351fb574ef6d4a5
sha256
098f63687d1a287ab24c2847894fa30a0acba5b30d2379c2e1d125a00b0c6af8
sha512
f8c288c164aaa31e225c712c98d0ae939d36b9521105662ad68fe06e23b6db7e1bd6ed1208ee1d385cd29b7f6949dc69503cf5fbf38076aadd02223e40c719dd
ripemd-160
ec3f88168425828eb1d0970633a22d0259fc1894
Diameter
162891672
Circumference
511739280.08616
Area
2.0839516740328E+16
Volume
2.2630558170026E+24
Surface area
8.3358066961311E+16
Circumference
511739280.08616
Perimeter
325783344
Area
6633424201738896
Diagonal
115181805.87001
Surface area
39800545210433376
Volume
5.4026477965326E+23
Space diagonal
141068326.01692
Perimeter
244337508
Area
2.8723569363922E+15
Altitude
70534163.008461
Surface area
2.8723569363922E+15
Volume
6.3670814888179E+22
Height
38393935.290005