91806921 is an odd 8-digits composite number following 91806920
and preceding 91806922 . In scientific notation, it is written as 9.1806921 × 10^7.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 61204608 positive integers (up to 91806921) that are relatively prime to 91806921.
91806921 has 4 divisors, whose sum is 102007700
The reverse of 91806921 is 12960819
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
ninety-one million eight hundred six thousand nine hundred twenty-one
Scientific notation
9.1806921 × 10^7
Engineering notation
9.1806921 × 10^6
Prime Factorization
9 × 10200769
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
91806921
Product of the distinct prime numbers
The prime factorization of 91806921 is 9 × 10200769.
Since it has a total of 2 prime factors.
9 , 10 , 2 , 83 , 990 , 692 , 3486 , 8608 , 9366 , 40603 , 156371 , 171035 , 3882356 , 609480 , 89338379 , 388039 , 109902252 , 128944039 , 8185585084 , 4769030600
n×2
183613842
n×3
275420763
n×4
367227684
n×5
459034605
n÷2
45903460.5
n÷3
30602307
n÷3
22951730.25
n÷5
18361384.2
n2
8428510743500241
n3
7.7379561997618E+23
n4
7.1039793353299E+31
n5
6.5219446962426E+39
2 √n
9581.5928216555
3 √n
451.11971525449
4 √n
97.885610901988
5 √n
39.135878266737
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
-91806920
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 91806921 can be divided by 4 positive divisors.
The sum of these divisors (counting 91806921) is 1, the average is 0.25.
Base
System
Value
2
Binary
101011110001101110011001001
3
Ternary
20101202021102100
4
Quaternary
11132031303021
5
Quinary
142000310141
6
Senary
13035424013
8
Octal
536156311
10
Decimal
91806921
12
Duodecimal
268b5009
16
Hexadecimal
578dcc9
20
Vigesimal
18dfh61
36
Base36
1inqo9
md5
05d4d474aa71279bca7d3c925a443736
sha1
a813d9051af4c36078222a79dadc8e70df985998
sha256
7cc9308306830cdca06dc2a7ac1dabe84b46379bacea8982d6e2fa1fd5c6ba1c
sha512
8764019b02030cbb0121e36a06ea92bb13bc0375d2a126c115b520e479c883f4da3ae6950001abfe381621578c69cdbd59a1fd0b5c59f67d4b54a1761d39e3dd
ripemd-160
2e6d87f4072659d1643a40a0ec541a8c42409792
Diameter
183613842
Circumference
576839897.1246
Area
2.6478947432483E+16
Volume
3.2412675134628E+24
Surface area
1.0591578972993E+17
Circumference
576839897.1246
Perimeter
367227684
Area
8428510743500241
Diagonal
129834592.79792
Surface area
50571064461001446
Volume
7.7379561997618E+23
Space diagonal
159014251.65846
Perimeter
275420763
Area
3.6496522099706E+15
Altitude
79507125.829231
Surface area
3.6496522099706E+15
Volume
9.1192688356267E+22
Height
43278197.599305