81252007 is an odd 8-digits composite number following 81252006
and preceding 81252008 . In scientific notation, it is written as 8.1252007 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 81229696 positive integers (up to 81252007) that are relatively prime to 81252007.
81252007 has 4 divisors, whose sum is 81274320
The reverse of 81252007 is 70025218
Previous prime number is 4583
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
eighty-one million two hundred fifty-two thousand seven
Scientific notation
8.1252007 × 10^7
Engineering notation
8.1252007 × 10^6
Prime Factorization
4583 × 17729
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81252007
Product of the distinct prime numbers
The prime factorization of 81252007 is 4583 × 17729.
Since it has a total of 2 prime factors.
6 , 8 , 87 , 6 , 220 , 718 , 8835 , 962 , 23282 , 70241 , 758355 , 196758 , 7083035 , 393279 , 81577577 , 43592781 , 7519371 , 785652524 , 1252186049 , 6771670999
n×2
162504014
n×3
243756021
n×4
325008028
n×5
406260035
n÷2
40626003.5
n÷3
27084002.333333
n÷3
20313001.75
n÷5
16250401.4
n2
6601888641528049
n3
5.3641670211466E+23
n4
4.3584933635137E+31
n5
3.5413633328167E+39
2 √n
9013.9895163019
3 √n
433.12311888085
4 √n
94.942032400312
5 √n
38.191509101711
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81252006
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81252007 can be divided by 4 positive divisors.
The sum of these divisors (counting 81252007) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101111100111010100111
3
Ternary
12122220000210121
4
Quaternary
10311330322213
5
Quinary
131300031012
6
Senary
12021302411
8
Octal
465747247
10
Decimal
81252007
12
Duodecimal
23264a07
16
Hexadecimal
4d7cea7
20
Vigesimal
157ga07
36
Base36
1cdig7
md5
7b5ca2595535ab23f7cb2d48127d8b6a
sha1
6effce2c878dc9c5e120612bfdf5494ed6876ee0
sha256
a0360ea29316c15bb66fdb77f956ee0358d60058fd033010a14901c757cb2e92
sha512
132b197baa0f2251d52dbb2c52cd9ab0982787114472839a2e810fe039806b88326c022a27038d7a08e3ea8d2b404b71aad6c01fce6d84604959fc182f2b65c7
ripemd-160
2c95bddbb135883a194d7b6bb0835b2cb9941d7e
Diameter
162504014
Circumference
510521416.56125
Area
2.0740444856042E+16
Volume
2.2469370275017E+24
Surface area
8.296177942417E+16
Circumference
510521416.56125
Perimeter
325008028
Area
6601888641528049
Diagonal
114907690.26943
Surface area
39611331849168294
Volume
5.3641670211466E+23
Space diagonal
140732604.34094
Perimeter
243756021
Area
2.8587016382596E+15
Altitude
70366302.170471
Surface area
2.8587016382596E+15
Volume
6.3217314601166E+22
Height
38302563.423145