81252012 is an even 8-digits composite number following 81252011
and preceding 81252013 . In scientific notation, it is written as 8.1252012 × 10^7.
The sum of its digits is 21. It has a total of 4 prime factors and 12 positive divisors.
There are 27084000 positive integers (up to 81252012) that are relatively prime to 81252012.
81252012 has 12 divisors, whose sum is 189588056
The reverse of 81252012 is 21025218
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 21
Digital Root 3
Name
eighty-one million two hundred fifty-two thousand twelve
Scientific notation
8.1252012 × 10^7
Engineering notation
8.1252012 × 10^6
Prime Factorization
2 × 2 × 3 × 6771001
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
40626006
Product of the distinct prime numbers
The prime factorization of 81252012 is 2 × 2 × 3 × 6771001.
Since it has a total of 4 prime factors.
6 , 8 , 68 , 79 , 754 , 181 , 7928 , 8443 , 18822 , 61775 , 31324 , 766469 , 3917372 , 8620183 , 63717617 , 46338074 , 604050251 , 640302134 , 1895319953 , 8779760717
n×2
162504024
n×3
243756036
n×4
325008048
n×5
406260060
n÷2
40626006
n÷3
27084004
n÷3
20313003
n÷5
16250402.4
n2
6601889454048144
n3
5.3641680114299E+23
n4
4.3584944363472E+31
n5
3.5413644224402E+39
2 √n
9013.9897936485
3 √n
433.12312776521
4 √n
94.942033860922
5 √n
38.191509571749
1 , 2 , 3 , 4 , 6 , 12 , 6771001 , 13542002 , 20313003 , 27084004 , 40626006 , 81252012
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
-81252011
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 81252012 can be divided by 12 positive divisors.
The sum of these divisors (counting 81252012) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110101111100111010101100
3
Ternary
12122220000210210
4
Quaternary
10311330322230
5
Quinary
131300031022
6
Senary
12021302420
8
Octal
465747254
10
Decimal
81252012
12
Duodecimal
23264a10
16
Hexadecimal
4d7ceac
20
Vigesimal
157ga0c
36
Base36
1cdigc
md5
521626edbd8cdc253e58a2b47313cfed
sha1
facf04ced2056d19c4643754b1ad11eb178e86a9
sha256
4e5739f4fbdec1ceb8dedfd6fa99e2c42d2feff6738689ec57e1f278cdf61fb4
sha512
7d3f0951b2590fac7fa2194c16488af797f179f6f84e28d3ad1c15c5701dc20cecd18cd0f18b732394c86d2843c264b8bf2f6f110ba6620f966a0b308d622ca2
ripemd-160
73fd0d6d1d2b23865dc28cc3256109dd675f259d
Diameter
162504024
Circumference
510521447.97718
Area
2.074044740865E+16
Volume
2.2469374423106E+24
Surface area
8.2961789634598E+16
Circumference
510521447.97718
Perimeter
325008048
Area
6601889454048144
Diagonal
114907697.3405
Surface area
39611336724288864
Volume
5.3641680114299E+23
Space diagonal
140732613.0012
Perimeter
243756036
Area
2.8587019900911E+15
Altitude
70366306.500598
Surface area
2.8587019900911E+15
Volume
6.3217326271768E+22
Height
38302565.780167