81347897 is an odd 8-digits prime number following 81347896
and preceding 81347898 . In scientific notation, it is written as 8.1347897 × 10^7.
The sum of its digits is 47. It has a total of 1 prime factors and 2 positive divisors.
There are 81347896 positive integers (up to 81347897) that are relatively prime to 81347897.
81347897 has 2 divisors, whose sum is 81347898
The reverse of 81347897 is 79874318
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
eighty-one million three hundred forty-seven thousand eight hundred ninety-seven
Scientific notation
8.1347897 × 10^7
Engineering notation
8.1347897 × 10^6
Prime Factorization
81347897
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81347897
Product of the distinct prime numbers
The prime factorization of 81347897 is 81347897.
Since it has a total of 1 prime factors.
8 , 1 , 21 , 27 , 555 , 724 , 2278 , 5312 , 81637 , 77733 , 46699 , 191792 , 3697867 , 4426953 , 30633753 , 52781216 , 266812626 , 392560300 , 1307134118 , 116602224
n×2
162695794
n×3
244043691
n×4
325391588
n×5
406739485
n÷2
40673948.5
n÷3
27115965.666667
n÷3
20336974.25
n÷5
16269579.4
n2
6617480346322609
n3
5.3831810961218E+23
n4
4.3791046133966E+31
n5
3.5623095104281E+39
2 √n
9019.3069024177
3 √n
433.29343610322
4 √n
94.970031601646
5 √n
38.200519232999
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81347898
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40673949
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9019.3069578544
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754142
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81347897 can be divided by 2 positive divisors.
The sum of these divisors (counting 81347897) is 81347898, the average is 40673949.
Base
System
Value
2
Binary
100110110010100010100111001
3
Ternary
12200001220100002
4
Quaternary
10312110110321
5
Quinary
131311113042
6
Senary
12023322345
8
Octal
466242471
10
Decimal
81347897
12
Duodecimal
232b03b5
16
Hexadecimal
4d94539
20
Vigesimal
15889eh
36
Base36
1cfkft
md5
33cbbbbba4bd7979a7d9b90bed7f14fb
sha1
2a832748c192c1fd2e44e4b518aaa264eb879ca6
sha256
18abf9c8b65f8154ff3391816d56fde289e7b200e53a37fa73e4ec56c305e3aa
sha512
e9dca4def4d76d93b67e8f0c1cd8878a5e987a87ccd563194a2770b3fa243c432a68729d9e06f14710505e680e6f5545b6b1717fa4a2f5e24f3ff8b63690a6ec
ripemd-160
2b560f6e9ac2bbcb9f27ca6b274dbbd3324e1dd9
Diameter
162695794
Circumference
511123911.20036
Area
2.0789427641282E+16
Volume
2.2549016246026E+24
Surface area
8.3157710565128E+16
Circumference
511123911.20036
Perimeter
325391588
Area
6617480346322609
Diagonal
115043299.20793
Surface area
39704882077935654
Volume
5.3831810961218E+23
Space diagonal
140898690.69288
Perimeter
244043691
Area
2.8654530444798E+15
Altitude
70449345.34644
Surface area
2.8654530444798E+15
Volume
6.3441397623715E+22
Height
38347766.402643