81749574 is an even 8-digits composite number following 81749573
and preceding 81749575 . In scientific notation, it is written as 8.1749574 × 10^7.
The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors.
There are 26778600 positive integers (up to 81749574) that are relatively prime to 81749574.
81749574 has 16 divisors, whose sum is 124883376
The reverse of 81749574 is 47594718
Previous prime number is 81
Is Prime? no
Number parity even
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighty-one million seven hundred forty-nine thousand five hundred seventy-four
Scientific notation
8.1749574 × 10^7
Engineering notation
8.1749574 × 10^6
Prime Factorization
2 × 177 × 81 × 2851
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81749574
Product of the distinct prime numbers
The prime factorization of 81749574 is 2 × 177 × 81 × 2851.
Since it has a total of 4 prime factors.
10 , 4 , 55 , 22 , 809 , 164 , 5827 , 3216 , 50428 , 759 , 41281 , 142773 , 6281195 , 6601143 , 91902153 , 77800114 , 139255522 , 891182428 , 8341514474 , 7565760182
n×2
163499148
n×3
245248722
n×4
326998296
n×5
408747870
n÷2
40874787
n÷3
27249858
n÷3
20437393.5
n÷5
16349914.8
n2
6682992849181476
n3
5.4633181846563E+23
n4
4.4662393422211E+31
n5
3.6511316360861E+39
2 √n
9041.547102128
3 √n
434.00543290643
4 √n
95.087050128438
5 √n
38.23816999825
1 , 2 , 81 , 162 , 177 , 354 , 2851 , 5702 , 14337 , 28674 , 230931 , 461862 , 504627 , 1009254 , 40874787 , 81749574
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81749573
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81749574 can be divided by 16 positive divisors.
The sum of these divisors (counting 81749574) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111110110011001000110
3
Ternary
12200211022100000
4
Quaternary
10313312121012
5
Quinary
131411441244
6
Senary
12040102130
8
Octal
467663106
10
Decimal
81749574
12
Duodecimal
23464946
16
Hexadecimal
4df6646
20
Vigesimal
15aidie
36
Base36
1co6di
md5
95bc43b6b8e762561f45262c56e43674
sha1
7166ab274f603e9ca608a11fb59eda602dec2409
sha256
7e7373fa2af155edb2344225a6caf05e0813e04db37eda0630a6bc6a88cdc293
sha512
897506666f87c1eaae75ad19e00ef1a5c21538fb777786ccb61c6b1c6c24c5651b69be6e58692ae1d48efc04ab2e0560f891a3dbf21dc4ec8cef1057ad48a5fd
ripemd-160
d01f05a688c0091e5b2b0a579419bbb43ea430a7
Diameter
163499148
Circumference
513647722.22499
Area
2.0995241238982E+16
Volume
2.288469369752E+24
Surface area
8.3980964955927E+16
Circumference
513647722.22499
Perimeter
326998296
Area
6682992849181476
Diagonal
115611356.26902
Surface area
40097957095088856
Volume
5.4633181846563E+23
Space diagonal
141594415.66511
Perimeter
245248722
Area
2.8938207903505E+15
Altitude
70797207.832556
Surface area
2.8938207903505E+15
Volume
6.4385822269171E+22
Height
38537118.756341