27991531 is an odd 8-digits composite number following 27991530
and preceding 27991532 . In scientific notation, it is written as 2.7991531 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 27976000 positive integers (up to 27991531) that are relatively prime to 27991531.
27991531 has 4 divisors, whose sum is 28007064
The reverse of 27991531 is 13519972
Previous prime number is 13451
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-seven million nine hundred ninety-one thousand five hundred thirty-one
Scientific notation
2.7991531 × 10^7
Engineering notation
2.7991531 × 10^6
Prime Factorization
13451 × 2081
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
27991531
Product of the distinct prime numbers
The prime factorization of 27991531 is 13451 × 2081.
Since it has a total of 2 prime factors.
6 , 5 , 87 , 99 , 431 , 264 , 7265 , 1532 , 85881 , 13171 , 862894 , 264076 , 8486570 , 2279478 , 19253939 , 20370782 , 784325056 , 739029582 , 5472724978 , 5402382595
n×2
55983062
n×3
83974593
n×4
111966124
n×5
139957655
n÷2
13995765.5
n÷3
9330510.3333333
n÷3
6997882.75
n÷5
5598306.2
n2
783525807723961
n3
2.1932086936205E+22
n4
6.1391269136949E+29
n5
1.7184356131762E+37
2 √n
5290.7023163281
3 √n
303.62827877655
4 √n
72.737214108929
5 √n
30.860668579435
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
-27991530
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 27991531 can be divided by 4 positive divisors.
The sum of these divisors (counting 27991531) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101010110001110111101011
3
Ternary
1221200010011101
4
Quaternary
1222301313223
5
Quinary
24131212111
6
Senary
2435542231
8
Octal
152616753
10
Decimal
27991531
12
Duodecimal
945a977
16
Hexadecimal
1ab1deb
20
Vigesimal
8eiigb
36
Base36
gnyej
md5
463a279278ac45c59fbfa4650f95734a
sha1
3bbbde64d6ce6afbc0b902d5f5eed566fe3f1b9d
sha256
696d28519f9fb97237f1f9396d7b272e91b6cfb4a4da156f738344866dea05a1
sha512
c623ff33bffc214987457a50a9057473b7481b74593984d6cbc5eec6eb2411afa7d10dcca9d3fa613850ec8bb0466246baa7423ffdcb3d712693fb965632b9a9
ripemd-160
fc2c354ddc245393f19258d4f1b71006e0415d49
Diameter
55983062
Circumference
175875976.30466
Area
2.4615189214436E+15
Volume
9.18689109289E+22
Surface area
9.8460756857744E+15
Circumference
175875976.30466
Perimeter
111966124
Area
783525807723961
Diagonal
39586002.771787
Surface area
4701154846343766
Volume
2.1932086936205E+22
Space diagonal
48482753.873639
Perimeter
83974593
Area
3.3927662700484E+14
Altitude
24241376.93682
Surface area
3.3927662700484E+14
Volume
2.5847212330273E+21
Height
13195334.257262