81679997 is an odd 8-digits composite number following 81679996
and preceding 81679998 . In scientific notation, it is written as 8.1679997 × 10^7.
The sum of its digits is 56. It has a total of 3 prime factors and 8 positive divisors.
There are 69737472 positive integers (up to 81679997) that are relatively prime to 81679997.
81679997 has 8 divisors, whose sum is 93713856
The reverse of 81679997 is 79997618
Previous prime number is 257
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 56
Digital Root 2
Name
eighty-one million six hundred seventy-nine thousand nine hundred ninety-seven
Scientific notation
8.1679997 × 10^7
Engineering notation
8.1679997 × 10^6
Prime Factorization
7 × 257 × 45403
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81679997
Product of the distinct prime numbers
The prime factorization of 81679997 is 7 × 257 × 45403.
Since it has a total of 3 prime factors.
7 , 6 , 55 , 95 , 330 , 6 , 5235 , 2472 , 76918 , 21491 , 858638 , 32163 , 8095875 , 960324 , 62671246 , 9254994 , 748723675 , 545743554 , 2256707176 , 206110900
n×2
163359994
n×3
245039991
n×4
326719988
n×5
408399985
n÷2
40839998.5
n÷3
27226665.666667
n÷3
20419999.25
n÷5
16335999.4
n2
6671621909920009
n3
5.449380575874E+23
n4
4.4510538908925E+31
n5
3.6356206845494E+39
2 √n
9037.6986561845
3 √n
433.8822707279
4 √n
95.066811538962
5 √n
38.231658885775
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81679996
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81679997 can be divided by 8 positive divisors.
The sum of these divisors (counting 81679997) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111100101011001111101
3
Ternary
12200200202220002
4
Quaternary
10313211121331
5
Quinary
131402224442
6
Senary
12034404045
8
Octal
467453175
10
Decimal
81679997
12
Duodecimal
23430625
16
Hexadecimal
4de567d
20
Vigesimal
15a9jjh
36
Base36
1cmoot
md5
f27139c00b5e237ccef7a13acf1ceab9
sha1
a427c75d284d6c4849bae5a05345d025a3f2dfe1
sha256
0573f73f075c86291a3e7e83ba2e4c284adeeeef400eacba1c311f9e51d0662f
sha512
3b0de75e07540dba575df3bdb631cb7bbaa4b9579662edc0b4fa819b88cb9732cd58aa4082e3573b04b2861ed5a438cc0cdca63b9c7653a5dc651c34cc1b19ce
ripemd-160
1d11a17a36e3fb3160bb0edcc3f86fbd933f7f96
Diameter
163359994
Circumference
513210557.04087
Area
2.0959518379733E+16
Volume
2.2826311978374E+24
Surface area
8.3838073518934E+16
Circumference
513210557.04087
Perimeter
326719988
Area
6671621909920009
Diagonal
115512959.53199
Surface area
40029731459520054
Volume
5.449380575874E+23
Space diagonal
141473904.76607
Perimeter
245039991
Area
2.8888970292178E+15
Altitude
70736952.383037
Surface area
2.8888970292178E+15
Volume
6.4221565974446E+22
Height
38504319.843998