81967939 is an odd 8-digits prime number following 81967938
and preceding 81967940 . In scientific notation, it is written as 8.1967939 × 10^7.
The sum of its digits is 52. It has a total of 1 prime factors and 2 positive divisors.
There are 81967938 positive integers (up to 81967939) that are relatively prime to 81967939.
81967939 has 2 divisors, whose sum is 81967940
The reverse of 81967939 is 93976918
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 52 Digital Root 7
Name
eighty-one million nine hundred sixty-seven thousand nine hundred thirty-nine
Scientific notation
8.1967939 × 10^7
Engineering notation
8.1967939 × 10^6
Prime Factorization
81967939
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81967939 Product of the distinct prime numbers
The prime factorization of 81967939 is 81967939.
Since it has a total of 1 prime factors.
6 , 10 , 50 , 14 , 863 , 367 , 7510 , 8333 , 28926 , 14120 , 399081 , 687836 , 7339244 , 4782371 , 12534265 , 64603265 , 258253071 , 681531186 , 5437387308 , 8951961318
n×2
163935878
n×3
245903817
n×4
327871756
n×5
409839695
n÷2
40983969.5
n÷3
27322646.333333
n÷3
20491984.75
n÷5
16393587.8
n2
6718743023907721
n3
5.5072151834034E+23
n4
4.5141507821309E+31
n5
3.7001563594651E+39
2 √n9053.6146924861
3 √n434.39151988653
4 √n95.150484457443
5 √n38.258576149279
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81967940 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40983970 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9053.6147477127 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999756002 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81967939 can be divided by 2 positive divisors.
The sum of these divisors (counting 81967939) is 81967940, the average is 40983970.
Base
System
Value
2
Binary
100111000101011101101000011
3
Ternary
12201020101212121
4
Quaternary
10320223231003
5
Quinary
131440433224
6
Senary
12044505111
8
Octal
470535503
10
Decimal
81967939
12
Duodecimal
2354b197
16
Hexadecimal
4e2bb43
20
Vigesimal
15c5jgj
36
Base36
1csuv7
md5
fd3a560145961655de6b03125321e384
sha1
2922521a3db752a5b7e9a2baca84f20d979176d4
sha256
4f698b6ed85a3b8f2fc858ecc5c71b63c7b1c7811be047a2c07785d63ebdfbd4
sha512
5c65b068831a46342dcf554170ccaab4e4296f628c5851d2776e9db4e3ee501afa6b029896191228bafccc3e913d8eaaf87058a24963a95237abc0da105c3880
ripemd-160
29d1011af3e52cda89bbd89ce83b10489dad4203
Diameter
163935878
Circumference
515019749.98459
Area
2.1107553725266E+16
Volume
2.3068569015891E+24
Surface area
8.4430214901065E+16
Circumference
515019749.98459
Perimeter
327871756
Area
6718743023907721
Diagonal
115920171.01357
Surface area
40312458143446326
Volume
5.5072151834034E+23
Space diagonal
141972634.93971
Perimeter
245903817
Area
2.9093010701018E+15
Altitude
70986317.469853
Surface area
2.9093010701018E+15
Volume
6.4903153360635E+22
Height
38640057.004524