81874487 is an odd 8-digits composite number following 81874486
and preceding 81874488 . In scientific notation, it is written as 8.1874487 × 10^7.
The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors.
There are 80946432 positive integers (up to 81874487) that are relatively prime to 81874487.
81874487 has 8 divisors, whose sum is 82807296
The reverse of 81874487 is 78447818
Previous prime number is 337
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
eighty-one million eight hundred seventy-four thousand four hundred eighty-seven
Scientific notation
8.1874487 × 10^7
Engineering notation
8.1874487 × 10^6
Prime Factorization
127 × 337 × 1913
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81874487
Product of the distinct prime numbers
The prime factorization of 81874487 is 127 × 337 × 1913.
Since it has a total of 3 prime factors.
6 , 1 , 81 , 53 , 422 , 951 , 4669 , 8204 , 78200 , 54012 , 680251 , 828679 , 7985269 , 9006183 , 25400945 , 83553751 , 891139310 , 122620815 , 8482110166 , 4099070550
n×2
163748974
n×3
245623461
n×4
327497948
n×5
409372435
n÷2
40937243.5
n÷3
27291495.666667
n÷3
20468621.75
n÷5
16374897.4
n2
6703431621513169
n3
5.4884002515097E+23
n4
4.4935995504303E+31
n5
3.6791115797491E+39
2 √n
9048.4521880817
3 √n
434.22637322874
4 √n
95.123352485505
5 √n
38.249848414697
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
-81874486
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 81874487 can be divided by 8 positive divisors.
The sum of these divisors (counting 81874487) is 1, the average is 0.125.
Base
System
Value
2
Binary
100111000010100111000110111
3
Ternary
12201001122200102
4
Quaternary
10320110320313
5
Quinary
131424440422
6
Senary
12042504315
8
Octal
470247067
10
Decimal
81874487
12
Duodecimal
2350509b
16
Hexadecimal
4e14e37
20
Vigesimal
15be647
36
Base36
1cqurb
md5
14b5b97ee87b02403c57a495bc0d3769
sha1
e8e0ff53a1c157051b6e2e0af877b5a0a792fc52
sha256
47026afec89569f68e7dbbe8203fd093e481225cf734e6b427ac0b202dacc92a
sha512
9e6612d18732d7d5aba2fb538667c17e4630d188443807ba740889e0095ceb2be54bd339c609a2d66958a3315f46c2573fd314d3017f06308bfeb5de42aaf527
ripemd-160
4f38fde9c1f03d91a1adc9609bdd9cdfd53a361d
Diameter
163748974
Circumference
514432573.75127
Area
2.1059451535987E+16
Volume
2.2989757213471E+24
Surface area
8.4237806143949E+16
Circumference
514432573.75127
Perimeter
327497948
Area
6703431621513169
Diagonal
115788009.92774
Surface area
40220589729079014
Volume
5.4884002515097E+23
Space diagonal
141810771.32764
Perimeter
245623461
Area
2.9026710383812E+15
Altitude
70905385.663819
Surface area
2.9026710383812E+15
Volume
6.4681417261808E+22
Height
38596003.309247