81072007 is an odd 8-digits composite number following 81072006
and preceding 81072008 . In scientific notation, it is written as 8.1072007 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 81054000 positive integers (up to 81072007) that are relatively prime to 81072007.
81072007 has 4 divisors, whose sum is 81090016
The reverse of 81072007 is 70027018
Previous prime number is 9007
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
eighty-one million seventy-two thousand seven
Scientific notation
8.1072007 × 10^7
Engineering notation
8.1072007 × 10^6
Prime Factorization
9007 × 9001
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81072007
Product of the distinct prime numbers
The prime factorization of 81072007 is 9007 × 9001.
Since it has a total of 2 prime factors.
9 , 10 , 67 , 18 , 588 , 438 , 5959 , 8440 , 12815 , 1224 , 79047 , 992043 , 3956556 , 6519958 , 48153557 , 89200221 , 287970039 , 617278227 , 1386670916 , 1500110548
n×2
162144014
n×3
243216021
n×4
324288028
n×5
405360035
n÷2
40536003.5
n÷3
27024002.333333
n÷3
20268001.75
n÷5
16214401.4
n2
6572670319008049
n3
5.3285957411131E+23
n4
4.3199995122369E+31
n5
3.5023103069607E+39
2 √n
9003.9995002221
3 √n
432.8030455441
4 √n
94.889406680736
5 √n
38.174572728836
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
-81072006
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 81072007 can be divided by 4 positive divisors.
The sum of these divisors (counting 81072007) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101010000111110000111
3
Ternary
12122112212212221
4
Quaternary
10311100332013
5
Quinary
131223301012
6
Senary
12013353211
8
Octal
465207607
10
Decimal
81072007
12
Duodecimal
23198807
16
Hexadecimal
4d50f87
20
Vigesimal
156e007
36
Base36
1c9nk7
md5
388861f7a01d392bda1295ad042ef6b2
sha1
678d651cd7577dc1d1297222cead61f954da75e1
sha256
849d20ff243e062c99b3ba49a1b8186b65b459901e1c8e0b290ce44af1130c59
sha512
1e6b7e72ed93203203f9bdb15c359402725eeca4d194a69cb1cc4698e6f9124891158eecce25762039fe6fbcd8181a18d9e6a9b0feca894cc388503b53b4b6a7
ripemd-160
df9e6c2e848f146fae1c10e29fdf2b81a9aa7798
Diameter
162144014
Circumference
509390443.20596
Area
2.0648652788663E+16
Volume
2.2320369645641E+24
Surface area
8.2594611154653E+16
Circumference
509390443.20596
Perimeter
324288028
Area
6572670319008049
Diagonal
114653131.82821
Surface area
39436021914048294
Volume
5.3285957411131E+23
Space diagonal
140420835.19558
Perimeter
243216021
Area
2.8460497334805E+15
Altitude
70210417.59779
Surface area
2.8460497334805E+15
Volume
6.2798103045714E+22
Height
38217710.609402