91081888 is an even 8-digits composite number following 91081887
and preceding 91081889 . In scientific notation, it is written as 9.1081888 × 10^7.
The sum of its digits is 43. It has a total of 7 prime factors and 24 positive divisors.
There are 45027840 positive integers (up to 91081888) that are relatively prime to 91081888.
91081888 has 24 divisors, whose sum is 181337940
The reverse of 91081888 is 88818019
Previous prime number is 89
Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7
Name
ninety-one million eighty-one thousand eight hundred eighty-eight
Scientific notation
9.1081888 × 10^7
Engineering notation
9.1081888 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 2 × 89 × 31981
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
7
Total number of prime factors
rad
Radical
5692618
Product of the distinct prime numbers
The prime factorization of 91081888 is 2 × 2 × 2 × 2 × 2 × 89 × 31981.
Since it has a total of 7 prime factors.
10 , 9 , 81 , 28 , 156 , 289 , 852 , 7505 , 13563 , 74901 , 947866 , 606293 , 7326285 , 6444686 , 47040394 , 76160801 , 165340158 , 982173435 , 605284929 , 856803274
n×2
182163776
n×3
273245664
n×4
364327552
n×5
455409440
n÷2
45540944
n÷3
30360629.333333
n÷3
22770472
n÷5
18216377.6
n2
8295910321644544
n3
7.5560717477407E+23
n4
6.8822128064768E+31
n5
6.2684493603169E+39
2 √n
9543.6831464587
3 √n
449.92902255034
4 √n
97.691776247843
5 √n
39.0738679858
1 , 2 , 4 , 8 , 16 , 32 , 89 , 178 , 356 , 712 , 1424 , 2848 , 31981 , 63962 , 127924 , 255848 , 511696 , 1023392 , 2846309 , 5692618 , 11385236 , 22770472 , 45540944 , 91081888
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
-91081887
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 91081888 can be divided by 24 positive divisors.
The sum of these divisors (counting 91081888) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
101011011011100110010100000
3
Ternary
20100101102212021
4
Quaternary
11123130302200
5
Quinary
141304110023
6
Senary
13012111224
8
Octal
533346240
10
Decimal
91081888
12
Duodecimal
26605514
16
Hexadecimal
56dcca0
20
Vigesimal
18954e8
36
Base36
1i878g
md5
25a67953fa269ac62110857a42c1c79f
sha1
c6ee67a3f363c472a36fd365c959beb33691f953
sha256
54db9388ecdedbb753c5f0db9d9b9627f3a6dd3a94027c0cb187dfb731312c23
sha512
a526fd56f4540aa47f89e986211f37d01158f760078f15201a3a449b30cd90db1c19cf5e3cac2ac8dc1fa799fcb3ec80b59d0ba1492da4e66d71bd64fcf4ba82
ripemd-160
53ab514d5cf6573f0ab10d160fde12ef4e53a8ed
Diameter
182163776
Circumference
572284380.43178
Area
2.6062370921318E+16
Volume
3.16507993236E+24
Surface area
1.0424948368527E+17
Circumference
572284380.43178
Perimeter
364327552
Area
8295910321644544
Diagonal
128809241.29615
Surface area
49775461929867264
Volume
7.5560717477407E+23
Space diagonal
157758457.6653
Perimeter
273245664
Area
3.5922345430309E+15
Altitude
78879228.832649
Surface area
3.5922345430309E+15
Volume
8.9049159532659E+22
Height
42936413.765382