1991312 is an even 7-digits composite number following 1991311
and preceding 1991313 . In scientific notation, it is written as 1.991312 × 10^6.
The sum of its digits is 26. It has a total of 6 prime factors and 20 positive divisors.
There are 936960 positive integers (up to 1991312) that are relatively prime to 1991312.
1991312 has 20 divisors, whose sum is 4085676
The reverse of 1991312 is 2131991
Previous prime number is 17
Is Prime? no
Number parity even
Number length 7
Sum of Digits 26
Digital Root 8
Name
one million nine hundred ninety-one thousand three hundred twelve
Scientific notation
1.991312 × 10^6
Engineering notation
1.991312 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 17 × 7321
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
248914
Product of the distinct prime numbers
The prime factorization of 1991312 is 2 × 2 × 2 × 2 × 17 × 7321.
Since it has a total of 6 prime factors.
1 , 3 , 7 , 3 , 110 , 531 , 909 , 1269 , 80717 , 97393 , 342288 , 572105 , 3410590 , 8543234 , 60261489 , 62717792 , 882197155 , 57854711 , 2995177517 , 3568997231
n×2
3982624
n×3
5973936
n×4
7965248
n×5
9956560
n÷2
995656
n÷3
663770.66666667
n÷3
497828
n÷5
398262.4
n2
3965323481344
n3
7896196232282083328
n4
1.5723790311698E+25
n5
3.1310972333168E+31
2 √n
1411.1385474148
3 √n
125.80940361393
4 √n
37.565124083581
5 √n
18.189797412886
1 , 2 , 4 , 8 , 16 , 17 , 34 , 68 , 136 , 272 , 7321 , 14642 , 29284 , 58568 , 117136 , 124457 , 248914 , 497828 , 995656 , 1991312
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1991311
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1991312 can be divided by 20 positive divisors.
The sum of these divisors (counting 1991312) is 1, the average is 0.05.
Base
System
Value
2
Binary
111100110001010010000
3
Ternary
10202011120022
4
Quaternary
13212022100
5
Quinary
1002210222
6
Senary
110403012
8
Octal
7461220
10
Decimal
1991312
12
Duodecimal
800468
16
Hexadecimal
1e6290
20
Vigesimal
c8i5c
36
Base36
16oi8
md5
90c8a67e02cea433c185dfdebef23358
sha1
85f6ac0a719dc20c52c093f54962ca5035097dea
sha256
a9ddf813d9d58830dc131a0040fa7f97a89d2f279d5f70150b56e6bdbd1dcf7e
sha512
8a2b1cb82fc341398ea6c5f67e658bb3e46cea0152cdd0b7c2e110cbaee6849e95f7dcb8cfd568f0ccb7273ccbe659792002e54f6767a6ffd764e9fa569c456c
ripemd-160
ae3db95e7b2e4cd812e034981318ddc962d8ead7
Diameter
3982624
Circumference
12511782.30041
Area
12457431118097
Volume
3.3075509432854E+19
Surface area
49829724472390
Circumference
12511782.30041
Perimeter
7965248
Area
3965323481344
Diagonal
2816140.4373163
Surface area
23791940888064
Volume
7896196232282083328
Space diagonal
3449053.5577216
Perimeter
5973936
Area
1717035434533.4
Altitude
1724526.7788608
Surface area
1717035434533.4
Volume
9.3057565023772E+17
Height
938713.47910543