81497188 is an even 8-digits composite number following 81497187
and preceding 81497189 . In scientific notation, it is written as 8.1497188 × 10^7.
The sum of its digits is 46. It has a total of 4 prime factors and 12 positive divisors.
There are 38976872 positive integers (up to 81497188) that are relatively prime to 81497188.
81497188 has 12 divisors, whose sum is 148821120
The reverse of 81497188 is 88179418
Previous prime number is 23
Is Prime? no
Number parity even
Number length 8
Sum of Digits 46
Digital Root 1
Name
eighty-one million four hundred ninety-seven thousand one hundred eighty-eight
Scientific notation
8.1497188 × 10^7
Engineering notation
8.1497188 × 10^6
Prime Factorization
2 × 2 × 23 × 885839
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
40748594
Product of the distinct prime numbers
The prime factorization of 81497188 is 2 × 2 × 23 × 885839.
Since it has a total of 4 prime factors.
9 , 2 , 9 , 89 , 602 , 370 , 1907 , 5653 , 43645 , 60820 , 531216 , 555864 , 373544 , 408628 , 68822269 , 92994277 , 262251639 , 515090411 , 9941545954 , 9739106549
n×2
162994376
n×3
244491564
n×4
325988752
n×5
407485940
n÷2
40748594
n÷3
27165729.333333
n÷3
20374297
n÷5
16299437.6
n2
6641791651907344
n3
5.4128734291232E+23
n4
4.4113396347346E+31
n5
3.5951177554382E+39
2 √n
9027.5792990148
3 √n
433.55833653546
4 √n
95.013574288176
5 √n
38.214530195887
1 , 2 , 4 , 23 , 46 , 92 , 885839 , 1771678 , 3543356 , 20374297 , 40748594 , 81497188
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81497187
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81497188 can be divided by 12 positive divisors.
The sum of these divisors (counting 81497188) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110110111000110001100100
3
Ternary
12200100111010101
4
Quaternary
10312320301210
5
Quinary
131330402223
6
Senary
12030433444
8
Octal
466706144
10
Decimal
81497188
12
Duodecimal
23362884
16
Hexadecimal
4db8c64
20
Vigesimal
15972j8
36
Base36
1cirms
md5
2c77831d20183f7660b9b164fc0d2b94
sha1
1da848da4cd69959989df34b5f3806d7d29ddc74
sha256
e2a239ce57abf42a856fae0f4ee898a52006cfcac3c0da42a98d6c357420fc1c
sha512
4f64fca81c10f7770d43dcb131e5e0d27e9bc8398373a5bc24654ce0a32f8877122473375454e96666a116dc6dc436d0126a0daac910ffc3327ae889bb7ce5e1
ripemd-160
cf2b19097a70b633cb2b4ba79fa39b069a7455b6
Diameter
162994376
Circumference
512061934.21805
Area
2.0865803860306E+16
Volume
2.267339119966E+24
Surface area
8.3463215441225E+16
Circumference
512061934.21805
Perimeter
325988752
Area
6641791651907344
Diagonal
115254428.56487
Surface area
39850749911444064
Volume
5.4128734291232E+23
Space diagonal
141157270.28999
Perimeter
244491564
Area
2.8759801485976E+15
Altitude
70578635.144996
Surface area
2.8759801485976E+15
Volume
6.3791325123959E+22
Height
38418142.854957