80821891 is an odd 8-digits composite number following 80821890
and preceding 80821892 . In scientific notation, it is written as 8.0821891 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 80204800 positive integers (up to 80821891) that are relatively prime to 80821891.
80821891 has 4 divisors, whose sum is 81438984
The reverse of 80821891 is 19812808
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
eighty million eight hundred twenty-one thousand eight hundred ninety-one
Scientific notation
8.0821891 × 10^7
Engineering notation
8.0821891 × 10^6
Prime Factorization
131 × 616961
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
80821891
Product of the distinct prime numbers
The prime factorization of 80821891 is 131 × 616961.
Since it has a total of 2 prime factors.
2 , 6 , 9 , 95 , 659 , 546 , 931 , 4323 , 31683 , 63636 , 397694 , 253807 , 7265646 , 1883373 , 20509108 , 32581429 , 740587732 , 846500173 , 8670833926 , 5888932632
n×2
161643782
n×3
242465673
n×4
323287564
n×5
404109455
n÷2
40410945.5
n÷3
26940630.333333
n÷3
20205472.75
n÷5
16164378.2
n2
6532178064815881
n3
5.2794298354714E+23
n4
4.2669350270462E+31
n5
3.4486175766001E+39
2 √n
8990.0996101267
3 √n
432.35750548754
4 √n
94.816135810983
5 √n
38.150989061966
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
-80821890
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 80821891 can be divided by 4 positive divisors.
The sum of these divisors (counting 80821891) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110100010011111010000011
3
Ternary
12122002011210101
4
Quaternary
10310103322003
5
Quinary
131142300031
6
Senary
12004143231
8
Octal
464237203
10
Decimal
80821891
12
Duodecimal
23097b17
16
Hexadecimal
4d13e83
20
Vigesimal
1552eeb
36
Base36
1c4akj
md5
cbc9df6d87e26eba03fa369c73f4aa1b
sha1
d78b053145e57f1e0d2a62795f47694606539ae3
sha256
0a0ed6902eebaaa0e34e850c498aa9abf063e56e815674abdf04d1575040bce0
sha512
166dd41905bff41f8a85dc7b0a41f4174d2746a0e7d5375abf12c0998ef42e7d96db1ffdb300e264ad31bc8560cf5d095cbf36216f63f5300f0b2740debcf79e
ripemd-160
7ee34db23e861b2e37267e3a00f98b4950daff16
Diameter
161643782
Circumference
507818918.02967
Area
2.0521442620366E+16
Volume
2.211442398168E+24
Surface area
8.2085770481464E+16
Circumference
507818918.02967
Perimeter
323287564
Area
6532178064815881
Diagonal
114299414.38884
Surface area
39193068388895286
Volume
5.2794298354714E+23
Space diagonal
139987621.57579
Perimeter
242465673
Area
2.828516073087E+15
Altitude
69993810.787897
Surface area
2.828516073087E+15
Volume
6.2218677291007E+22
Height
38099804.79628