81492005 is an odd 8-digits composite number following 81492004
and preceding 81492006 . In scientific notation, it is written as 8.1492005 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 54302976 positive integers (up to 81492005) that are relatively prime to 81492005.
81492005 has 8 divisors, whose sum is 84204288
The reverse of 81492005 is 50029418
Previous prime number is 10441
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
eighty-one million four hundred ninety-two thousand five
Scientific notation
8.1492005 × 10^7
Engineering notation
8.1492005 × 10^6
Prime Factorization
35 × 10441 × 223
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81492005
Product of the distinct prime numbers
The prime factorization of 81492005 is 35 × 10441 × 223.
Since it has a total of 3 prime factors.
7 , 6 , 40 , 8 , 887 , 801 , 2720 , 4164 , 68901 , 28864 , 433128 , 282161 , 8547289 , 6465724 , 8155616 , 9177252 , 125344350 , 617099753 , 5017906118 , 3369198914
n×2
162984010
n×3
244476015
n×4
325968020
n×5
407460025
n÷2
40746002.5
n÷3
27164001.666667
n÷3
20373001.25
n÷5
16298401
n2
6640946878920025
n3
5.4118407626169E+23
n4
4.4102175448638E+31
n5
3.5939747021713E+39
2 √n
9027.2922296777
3 √n
433.54914529606
4 √n
95.012063600775
5 √n
38.214044115438
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81492004
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81492005 can be divided by 8 positive divisors.
The sum of these divisors (counting 81492005) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110110111100000100101
3
Ternary
12200100020000102
4
Quaternary
10312313200211
5
Quinary
131330221010
6
Senary
12030353445
8
Octal
466674045
10
Decimal
81492005
12
Duodecimal
2335b885
16
Hexadecimal
4db7825
20
Vigesimal
1596a05
36
Base36
1cinmt
md5
643d0a5b307712bb83b1517ea553cff1
sha1
405b35ba67c8bfd7554dfc57e260b979793af1cb
sha256
97ac795fa73f8ade7b9ac43841024da14a361aa9400039781d7182a1eb477c8a
sha512
6a3181cecabdc1fc43494531283a63daf19fed8cbac498e0ec3b115a3ecce21f71dac01c4895d58dcba20a3865dc0a2fe004fbcb973b144e8b4b5bfbe9334858
ripemd-160
38d5f81df1f3ea98d902779d14ffb01163b567cc
Diameter
162984010
Circumference
512029368.46861
Area
2.0863149927695E+16
Volume
2.2669065576313E+24
Surface area
8.3452599710781E+16
Circumference
512029368.46861
Perimeter
325968020
Area
6640946878920025
Diagonal
115247098.69598
Surface area
39845681273520150
Volume
5.4118407626169E+23
Space diagonal
141148293.07066
Perimeter
244476015
Area
2.8756143511639E+15
Altitude
70574146.535328
Surface area
2.8756143511639E+15
Volume
6.3779155032469E+22
Height
38415699.565325