81245369 is an odd 8-digits prime number following 81245368
and preceding 81245370 . In scientific notation, it is written as 8.1245369 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 81245368 positive integers (up to 81245369) that are relatively prime to 81245369.
81245369 has 2 divisors, whose sum is 81245370
The reverse of 81245369 is 96354218
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 38 Digital Root 2
Name
eighty-one million two hundred forty-five thousand three hundred sixty-nine
Scientific notation
8.1245369 × 10^7
Engineering notation
8.1245369 × 10^6
Prime Factorization
81245369
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81245369 Product of the distinct prime numbers
The prime factorization of 81245369 is 81245369.
Since it has a total of 1 prime factors.
6 , 1 , 52 , 8 , 275 , 641 , 3120 , 1239 , 53371 , 24731 , 704976 , 448285 , 5981386 , 2439449 , 79331741 , 24174055 , 417226128 , 530199996 , 4452703835 , 1324686966
n×2
162490738
n×3
243736107
n×4
324981476
n×5
406226845
n÷2
40622684.5
n÷3
27081789.666667
n÷3
20311342.25
n÷5
16249073.8
n2
6600809983946161
n3
5.3628524284459E+23
n4
4.3570692444163E+31
n5
3.5399169852116E+39
2 √n9013.6213033386
3 √n433.11132368683
4 √n94.940093234306
5 √n38.190885059225
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81245370 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40622685 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9013.6213588102 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999753832 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81245369 can be divided by 2 positive divisors.
The sum of these divisors (counting 81245369) is 81245370, the average is 40622685.
Base
System
Value
2
Binary
100110101111011010010111001
3
Ternary
12122212200200202
4
Quaternary
10311323102321
5
Quinary
131244322434
6
Senary
12021211545
8
Octal
465732271
10
Decimal
81245369
12
Duodecimal
23260bb5
16
Hexadecimal
4d7b4b9
20
Vigesimal
157fd89
36
Base36
1cddbt
md5
54747de02b6e8e2b44a425624f5a8a14
sha1
99d3bba0c8eebcd10070b795ef44957ba4682bee
sha256
dc9fc34f01ee199fb2050ea254d8660128e2420974612f21682fd2f5ede0edd5
sha512
e1b1f61bdd5ff71ae4a8e233af0a2fb7eda2be323b1dbd488b5186195822e380bc12bea1b47936e9de226056f5d8b48e10223ea50ab9db0a271398183f86ed3f
ripemd-160
202d22d1b8009cd79dfc9968117731943489ddc0
Diameter
162490738
Circumference
510479708.77718
Area
2.0737056153307E+16
Volume
2.2463863721989E+24
Surface area
8.294822461323E+16
Circumference
510479708.77718
Perimeter
324981476
Area
6600809983946161
Diagonal
114898302.71981
Surface area
39604859903676966
Volume
5.3628524284459E+23
Space diagonal
140721106.98768
Perimeter
243736107
Area
2.8582345658257E+15
Altitude
70360553.493841
Surface area
2.8582345658257E+15
Volume
6.3201821977614E+22
Height
38299434.239936