2147991 is an odd 7-digits composite number following 2147990
and preceding 2147992 . In scientific notation, it is written as 2.147991 × 10^6.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 1428480 positive integers (up to 2147991) that are relatively prime to 2147991.
2147991 has 8 divisors, whose sum is 2871024
The reverse of 2147991 is 1997412
Previous prime number is 641
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 33
Digital Root 6
Name
two million one hundred forty-seven thousand nine hundred ninety-one
Scientific notation
2.147991 × 10^6
Engineering notation
2.147991 × 10^6
Prime Factorization
3 × 641 × 1117
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2147991
Product of the distinct prime numbers
The prime factorization of 2147991 is 3 × 641 × 1117.
Since it has a total of 3 prime factors.
10 , 9 , 46 , 15 , 757 , 173 , 8 , 6701 , 75140 , 31338 , 882423 , 182428 , 9896971 , 1275272 , 24909034 , 26364460 , 690892175 , 53195487 , 2354039943 , 5039173318
n×2
4295982
n×3
6443973
n×4
8591964
n×5
10739955
n÷2
1073995.5
n÷3
715997
n÷3
536997.75
n÷5
429598.2
n2
4613865336081
n3
9.910541217114E+18
n4
2.128775333949E+25
n5
4.5725902583444E+31
2 √n
1465.6026064387
3 √n
129.02607489255
4 √n
38.283189606389
5 √n
18.467431273527
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2147990
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2147991 can be divided by 8 positive divisors.
The sum of these divisors (counting 2147991) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000001100011010010111
3
Ternary
11001010111020
4
Quaternary
20030122113
5
Quinary
1022213431
6
Senary
114012223
8
Octal
10143227
10
Decimal
2147991
12
Duodecimal
877073
16
Hexadecimal
20c697
20
Vigesimal
d89jb
36
Base36
1a1ef
md5
9da9c0af52db2a27d818a2cd8ff50a6d
sha1
16824eab7da8363bf6b2283644caa59b2d43e752
sha256
d0f9caddb67a6354108f50f6db08368c1be43bf258a883f5e505c5bd8dec6fb9
sha512
7e2dcf87162e251e0d5e13c7f1c93cd4b5ee5b32f41508e30c64390bb58e9b446d314503b14bedfdb14f34a5ac9c3cbb46342ca14d4994021e80efc2a0a30873
ripemd-160
7a8d3f643be53b236d3088a9cd8ca870fa01fad8
Diameter
4295982
Circumference
13496225.491154
Area
14494885444485
Volume
4.1513177974379E+19
Surface area
57979541777939
Circumference
13496225.491154
Perimeter
8591964
Area
4613865336081
Diagonal
3037718.0040553
Surface area
27683192016486
Volume
9.910541217114E+18
Space diagonal
3720429.5462007
Perimeter
6443973
Area
1997862295343.3
Altitude
1860214.7731003
Surface area
1997862295343.3
Volume
1.1679684833083E+18
Height
1012572.6680184