81739969 is an odd 8-digits prime number following 81739968
and preceding 81739970 . In scientific notation, it is written as 8.1739969 × 10^7.
The sum of its digits is 52. It has a total of 1 prime factors and 2 positive divisors.
There are 81739968 positive integers (up to 81739969) that are relatively prime to 81739969.
81739969 has 2 divisors, whose sum is 81739970
The reverse of 81739969 is 96993718
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 seven hundred thirty-nine thousand nine hundred sixty-nine
Scientific notation
8.1739969 × 10^7
Engineering notation
8.1739969 × 10^6
Prime Factorization
81739969
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81739969
Product of the distinct prime numbers
The prime factorization of 81739969 is 81739969.
Since it has a total of 1 prime factors.
1 , 10 , 64 , 47 , 754 , 217 , 908 , 3417 , 41211 , 39797 , 260950 , 465835 , 7077503 , 5728604 , 89232343 , 49053723 , 524723585 , 228380323 , 5605719781 , 1106218153
n×2
163479938
n×3
245219907
n×4
326959876
n×5
408699845
n÷2
40869984.5
n÷3
27246656.333333
n÷3
20434992.25
n÷5
16347993.8
n2
6681422532120961
n3
5.4613927065147E+23
n4
4.4641407052734E+31
n5
3.6489872286068E+39
2 √n
9041.0159274276
3 √n
433.98843471202
4 √n
95.084256990459
5 √n
38.237271412809
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81739970
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40869985
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9041.0159827311
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999755322
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81739969 can be divided by 2 positive divisors.
The sum of these divisors (counting 81739969) is 81739970, the average is 40869985.
Base
System
Value
2
Binary
100110111110100000011000001
3
Ternary
12200210211011021
4
Quaternary
10313310003001
5
Quinary
131411134334
6
Senary
12035545441
8
Octal
467640301
10
Decimal
81739969
12
Duodecimal
2345b281
16
Hexadecimal
4df40c1
20
Vigesimal
15ah9i9
36
Base36
1cnyyp
md5
45920b09732b52fe694b7e938d724d4a
sha1
a96e8cb8f7486b6a4008acaace21ae1ea7d87320
sha256
600d199d38607a70144f7ae0c46e7f838c10cfe889e08bd7dd672303dd44937f
sha512
f0ad59967e3471dcd73a3be2542beb4fa33af40cc07b2c21b6bea637dc610cc50ccc1c1e370e43571fd82282a1da1a1c6b7bf728db0306023928a8a147a29a20
ripemd-160
d5eb0090aab710b5c7cb74d4b7618f6fefead1a3
Diameter
163479938
Circumference
513587372.23011
Area
2.0990307942441E+16
Volume
2.2876628273541E+24
Surface area
8.3961231769762E+16
Circumference
513587372.23011
Perimeter
326959876
Area
6681422532120961
Diagonal
115597772.74776
Surface area
40088535192725766
Volume
5.4613927065147E+23
Space diagonal
141577779.3171
Perimeter
245219907
Area
2.8931408231173E+15
Altitude
70788889.658552
Surface area
2.8931408231173E+15
Volume
6.4363130291655E+22
Height
38532590.915919