91997891 is an odd 8-digits composite number following 91997890
and preceding 91997892 . In scientific notation, it is written as 9.1997891 × 10^7.
The sum of its digits is 53. It has a total of 2 prime factors and 4 positive divisors.
There are 89754000 positive integers (up to 91997891) that are relatively prime to 91997891.
91997891 has 4 divisors, whose sum is 94241784
The reverse of 91997891 is 19879919
Previous prime number is 41
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 53
Digital Root 8
Name
ninety-one million nine hundred ninety-seven thousand eight hundred ninety-one
Scientific notation
9.1997891 × 10^7
Engineering notation
9.1997891 × 10^6
Prime Factorization
41 × 2243851
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
91997891
Product of the distinct prime numbers
The prime factorization of 91997891 is 41 × 2243851.
Since it has a total of 2 prime factors.
8 , 6 , 75 , 97 , 577 , 187 , 3952 , 6566 , 56963 , 90002 , 344122 , 380968 , 6196812 , 2788361 , 28588400 , 84980231 , 945959609 , 544923554 , 6292453429 , 8007516372
n×2
183995782
n×3
275993673
n×4
367991564
n×5
459989455
n÷2
45998945.5
n÷3
30665963.666667
n÷3
22999472.75
n÷5
18399578.2
n2
8463611948447881
n3
7.7863444949961E+23
n4
7.163272721391E+31
n5
6.590059830258E+39
2 √n
9591.5531067706
3 √n
451.43229396313
4 √n
97.936474853706
5 √n
39.152146251284
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
-91997890
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 91997891 can be divided by 4 positive divisors.
The sum of these divisors (counting 91997891) is 1, the average is 0.25.
Base
System
Value
2
Binary
101011110111100011011000011
3
Ternary
20102002222101022
4
Quaternary
11132330123003
5
Quinary
142022413031
6
Senary
13043500055
8
Octal
536743303
10
Decimal
91997891
12
Duodecimal
2698762b
16
Hexadecimal
57bc6c3
20
Vigesimal
18ejeeb
36
Base36
1iru0z
md5
7cea848355e44dd49a383548653f5cbb
sha1
930e46818aa06cecf7e346de0d7bdecbd90591d1
sha256
c6e83443522ab2909cc40d2f5a32c18a66f57e0fab6717784f85d7f58dc5020f
sha512
5c0170442e66519522cea0d3eb2b5eaa4d5d57cad589be07d319cb5d1d7e348b1714ff1f59330f2e2871e3cb9c2a43c09267d623ad9054ac3aa164d0d22a3087
ripemd-160
0dbfe705c3f25672eb6d5c78104d26dafb0eb749
Diameter
183995782
Circumference
578039797.02271
Area
2.6589221120079E+16
Volume
3.2615363551732E+24
Surface area
1.0635688448031E+17
Circumference
578039797.02271
Perimeter
367991564
Area
8463611948447881
Diagonal
130104665.16192
Surface area
50781671690687286
Volume
7.7863444949961E+23
Space diagonal
159345021.40118
Perimeter
275993673
Area
3.6648514775647E+15
Altitude
79672510.700592
Surface area
3.6648514775647E+15
Volume
9.1762949884438E+22
Height
43368221.720641