81794913 is an odd 8-digits composite number following 81794912
and preceding 81794914 . In scientific notation, it is written as 8.1794913 × 10^7.
The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors.
There are 54529940 positive integers (up to 81794913) that are relatively prime to 81794913.
81794913 has 4 divisors, whose sum is 109059888
The reverse of 81794913 is 31949718
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million seven hundred ninety-four thousand nine hundred thirteen
Scientific notation
8.1794913 × 10^7
Engineering notation
8.1794913 × 10^6
Prime Factorization
3 × 27264971
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81794913
Product of the distinct prime numbers
The prime factorization of 81794913 is 3 × 27264971.
Since it has a total of 2 prime factors.
10 , 7 , 75 , 84 , 371 , 390 , 9885 , 2399 , 81488 , 39565 , 666475 , 88522 , 346020 , 9673446 , 42087370 , 42922868 , 143754116 , 902925994 , 9655552863 , 5864890223
n×2
163589826
n×3
245384739
n×4
327179652
n×5
408974565
n÷2
40897456.5
n÷3
27264971
n÷3
20448728.25
n÷5
16358982.6
n2
6690407792677569
n3
5.4724132333658E+23
n4
4.4761556432321E+31
n5
3.6612676141263E+39
2 √n
9044.0540135495
3 √n
434.08565243025
4 √n
95.100231406393
5 √n
38.242410499643
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
-81794912
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 81794913 can be divided by 4 positive divisors.
The sum of these divisors (counting 81794913) is 1, the average is 0.25.
Base
System
Value
2
Binary
100111000000001011101100001
3
Ternary
12200220121112020
4
Quaternary
10320001131201
5
Quinary
131414414123
6
Senary
12041052053
8
Octal
470013541
10
Decimal
81794913
12
Duodecimal
23487029
16
Hexadecimal
4e01761
20
Vigesimal
15b475d
36
Base36
1cp5cx
md5
aff27633cbb1cc5fb94d009a437993ec
sha1
5119b8dc4dac6a2d4ed012eba2416b4da65bc240
sha256
62f72f31e7071eed0f02c8b24f46b6303254b1afb87aef9e9ff0326ab1b80e97
sha512
be9a57705e14be1a80178fb9d8446dc4568b08cdeb7fc2b6e850a1d8cd2a5406c010212b4c5265aed2e4281ed89322ea1f2763db67e322f2685abc81f6a992cb
ripemd-160
c8b48c4449df3edc85ee2ab0f1628fc49fb2ce60
Diameter
163589826
Circumference
513932595.56363
Area
2.1018535970996E+16
Volume
2.2922790948466E+24
Surface area
8.4074143883983E+16
Circumference
513932595.56363
Perimeter
327179652
Area
6690407792677569
Diagonal
115675475.29773
Surface area
40142446756065414
Volume
5.4724132333658E+23
Space diagonal
141672945.11668
Perimeter
245384739
Area
2.8970315550681E+15
Altitude
70836472.558338
Surface area
2.8970315550681E+15
Volume
6.4493008446133E+22
Height
38558491.765909