81774865 is an odd 8-digits composite number following 81774864
and preceding 81774866 . In scientific notation, it is written as 8.1774865 × 10^7.
The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors.
There are 65419888 positive integers (up to 81774865) that are relatively prime to 81774865.
81774865 has 4 divisors, whose sum is 98129844
The reverse of 81774865 is 56847718
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
eighty-one million seven hundred seventy-four thousand eight hundred sixty-five
Scientific notation
8.1774865 × 10^7
Engineering notation
8.1774865 × 10^6
Prime Factorization
5 × 16354973
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81774865
Product of the distinct prime numbers
The prime factorization of 81774865 is 5 × 16354973.
Since it has a total of 2 prime factors.
10 , 9 , 72 , 67 , 878 , 212 , 4471 , 1685 , 49532 , 56252 , 381020 , 473292 , 4919070 , 4382589 , 26080632 , 81178713 , 631458655 , 918097630 , 9530455309 , 5761589067
n×2
163549730
n×3
245324595
n×4
327099460
n×5
408874325
n÷2
40887432.5
n÷3
27258288.333333
n÷3
20443716.25
n÷5
16354973
n2
6687128545768225
n3
5.4683903406784E+23
n4
4.4717688187628E+31
n5
3.6567829146554E+39
2 √n
9042.9455931129
3 √n
434.05018461635
4 √n
95.094403584611
5 √n
38.240535666613
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
-81774864
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 81774865 can be divided by 4 positive divisors.
The sum of these divisors (counting 81774865) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110111111100100100010001
3
Ternary
12200212121000201
4
Quaternary
10313330210101
5
Quinary
131413243430
6
Senary
12040415201
8
Octal
467744421
10
Decimal
81774865
12
Duodecimal
23477501
16
Hexadecimal
4dfc911
20
Vigesimal
15b1h35
36
Base36
1copw1
md5
8efc02aaa0de9834f71f134912781eca
sha1
78c962b8c34f42d4607a7e1673843a3da8af0fab
sha256
6f9e7c7131aa1eb9a2d78e9c5e5cc61b2c5cba5309112e3ec648594bc37c4600
sha512
31b5d6b1e1ebb476d5295144e7ee797d7ced147efb8777bc24a711af8d6334ad3b3c9cb33fabe8e62708d818c4c0b92c8c4b1a14b7d09ff50860552d5c1948fa
ripemd-160
4b4f3ec1af87148817156d39ed15236ea0a2910b
Diameter
163549730
Circumference
513806630.26459
Area
2.1008233912996E+16
Volume
2.2905939894982E+24
Surface area
8.4032935651984E+16
Circumference
513806630.26459
Perimeter
327099460
Area
6687128545768225
Diagonal
115647123.14423
Surface area
40122771274609350
Volume
5.4683903406784E+23
Space diagonal
141638220.96209
Perimeter
245324595
Area
2.8956115995037E+15
Altitude
70819110.481043
Surface area
2.8956115995037E+15
Volume
6.4445598201146E+22
Height
38549041.048076