80821865 is an odd 8-digits composite number following 80821864
and preceding 80821866 . In scientific notation, it is written as 8.0821865 × 10^7.
The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors.
There are 62484480 positive integers (up to 80821865) that are relatively prime to 80821865.
80821865 has 16 divisors, whose sum is 100290960
The reverse of 80821865 is 56812808
Previous prime number is 109
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty million eight hundred twenty-one thousand eight hundred sixty-five
Scientific notation
8.0821865 × 10^7
Engineering notation
8.0821865 × 10^6
Prime Factorization
5 × 41 × 109 × 3617
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
80821865
Product of the distinct prime numbers
The prime factorization of 80821865 is 5 × 41 × 109 × 3617.
Since it has a total of 4 prime factors.
8 , 6 , 20 , 48 , 953 , 728 , 8653 , 5820 , 15040 , 22073 , 945226 , 246715 , 3170554 , 6495134 , 41601740 , 20320203 , 433660114 , 607664986 , 7660319393 , 3696784900
n×2
161643730
n×3
242465595
n×4
323287460
n×5
404109325
n÷2
40410932.5
n÷3
26940621.666667
n÷3
20205466.25
n÷5
16164373
n2
6532173862078225
n3
5.2794247403741E+23
n4
4.2669295364418E+31
n5
3.4486120295881E+39
2 √n
8990.0981640914
3 √n
432.35745912512
4 √n
94.816128185512
5 √n
38.150986607369
1 , 5 , 41 , 109 , 205 , 545 , 3617 , 4469 , 18085 , 22345 , 148297 , 394253 , 741485 , 1971265 , 16164373 , 80821865
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
-80821864
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 80821865 can be divided by 16 positive divisors.
The sum of these divisors (counting 80821865) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110100010011111001101001
3
Ternary
12122002011202102
4
Quaternary
10310103321221
5
Quinary
131142244430
6
Senary
12004143145
8
Octal
464237151
10
Decimal
80821865
12
Duodecimal
23097ab5
16
Hexadecimal
4d13e69
20
Vigesimal
1552ed5
36
Base36
1c4ajt
md5
1108183cbdf28ad56343c808aa827083
sha1
fcd5eb8b64f866ec12c4d342e247c6dbb1032bb7
sha256
623c60c2255af56cb715ec09837e0c3b5139053ad6f4bac29c0cedbf6e212d86
sha512
07819b016e651f7952f682a99a368d7fe3b7fd50e2276a02cc748948b30704aa3e4b71011000665f114d819ed33621ed052ea0a4a0cc84139c1cab875ccd0053
ripemd-160
1991a991fbcb6e7a10c31fc360e5f488ad92390a
Diameter
161643730
Circumference
507818754.66685
Area
2.0521429417076E+16
Volume
2.2114402639386E+24
Surface area
8.2085717668305E+16
Circumference
507818754.66685
Perimeter
323287460
Area
6532173862078225
Diagonal
114299377.61929
Surface area
39193043172469350
Volume
5.2794247403741E+23
Space diagonal
139987576.54247
Perimeter
242465595
Area
2.8285142532482E+15
Altitude
69993788.271236
Surface area
2.8285142532482E+15
Volume
6.221861724471E+22
Height
38099792.539762