81749228 is an even 8-digits composite number following 81749227
and preceding 81749229 . In scientific notation, it is written as 8.1749228 × 10^7.
The sum of its digits is 41. It has a total of 5 prime factors and 24 positive divisors.
There are 37035200 positive integers (up to 81749228) that are relatively prime to 81749228.
81749228 has 24 divisors, whose sum is 156585744
The reverse of 81749228 is 82294718
Previous prime number is 317
Is Prime? no Number parity even Number length 8 Sum of Digits 41 Digital Root 5
Name
eighty-one million seven hundred forty-nine thousand two hundred twenty-eight
Scientific notation
8.1749228 × 10^7
Engineering notation
8.1749228 × 10^6
Prime Factorization
2 × 2 × 11 × 317 × 5861
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
40874614 Product of the distinct prime numbers
The prime factorization of 81749228 is 2 × 2 × 11 × 317 × 5861.
Since it has a total of 5 prime factors.
8 , 7 , 68 , 84 , 526 , 60 , 4540 , 9851 , 55207 , 60891 , 868932 , 84917 , 4926316 , 2065439 , 27080738 , 50944661 , 857812500 , 460569491 , 594362726 , 3499356074
n×2
163498456
n×3
245247684
n×4
326996912
n×5
408746140
n÷2
40874614
n÷3
27249742.666667
n÷3
20437307
n÷5
16349845.6
n2
6682936278595984
n3
5.4632488154841E+23
n4
4.4661637303774E+31
n5
3.6510543707996E+39
2 √n9041.5279682142
3 √n434.00482060521
4 √n95.086949515768
5 √n38.238137630059
1 , 2 , 4 , 11 , 22 , 44 , 317 , 634 , 1268 , 3487 , 5861 , 6974 , 11722 , 13948 , 23444 , 64471 , 128942 , 257884 , 1857937 , 3715874 , 7431748 , 20437307 , 40874614 , 81749228
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-81749227 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81749228 can be divided by 24 positive divisors.
The sum of these divisors (counting 81749228) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100110111110110010011101100
3
Ternary
12200211021212012
4
Quaternary
10313312103230
5
Quinary
131411433403
6
Senary
12040100352
8
Octal
467662354
10
Decimal
81749228
12
Duodecimal
234646b8
16
Hexadecimal
4df64ec
20
Vigesimal
15aid18
36
Base36
1co63w
md5
d94bdf6df366755ff06d7ab37e461d97
sha1
e2c7eaff11ccd08eab7f984f9837671a36d01276
sha256
27a9d0126f7a67f60cae80f6e644533bb16656604aed47d6f7f298514d07babf
sha512
1e5c16a1fe023a352f237c1d19ba7bae50f01b6a3f23c3a9c740360d769ec5e814c6e737a040ba4a997cae5e5e063ce2927aeebb1101e19bbe70fd76aad5e4cc
ripemd-160
481c4e6d022cbb41a92a7d0686afed4c05712bff
Diameter
163498456
Circumference
513645548.24287
Area
2.0995063517246E+16
Volume
2.2884403124611E+24
Surface area
8.3980254068983E+16
Circumference
513645548.24287
Perimeter
326996912
Area
6682936278595984
Diagonal
115610866.95113
Surface area
40097617671575904
Volume
5.4632488154841E+23
Space diagonal
141593816.37553
Perimeter
245247684
Area
2.8937962945684E+15
Altitude
70796908.187766
Surface area
2.8937962945684E+15
Volume
6.4385004745637E+22
Height
38536955.650377