2145871 is an odd 7-digits composite number following 2145870
and preceding 2145872 . In scientific notation, it is written as 2.145871 × 10^6.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 1697760 positive integers (up to 2145871) that are relatively prime to 2145871.
2145871 has 8 divisors, whose sum is 2641184
The reverse of 2145871 is 1785412
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 28
Digital Root 1
Name
two million one hundred forty-five thousand eight hundred seventy-one
Scientific notation
2.145871 × 10^6
Engineering notation
2.145871 × 10^6
Prime Factorization
13 × 7 × 23581
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2145871
Product of the distinct prime numbers
The prime factorization of 2145871 is 13 × 7 × 23581.
Since it has a total of 3 prime factors.
1 , 6 , 30 , 40 , 989 , 563 , 6947 , 2708 , 90935 , 90436 , 94137 , 994543 , 6488120 , 1073447 , 97995373 , 95043277 , 580473150 , 694319858 , 9324680479 , 227708791
n×2
4291742
n×3
6437613
n×4
8583484
n×5
10729355
n÷2
1072935.5
n÷3
715290.33333333
n÷3
536467.75
n÷5
429174.2
n2
4604762348641
n3
9.8812259858406E+18
n4
2.1203836287462E+25
n5
4.5500697378012E+31
2 √n
1464.879175905
3 √n
128.98361268509
4 √n
38.273740030274
5 √n
18.463784478008
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
-2145870
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 2145871 can be divided by 8 positive divisors.
The sum of these divisors (counting 2145871) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000001011111001001111
3
Ternary
11001000120201
4
Quaternary
20023321033
5
Quinary
1022131441
6
Senary
113554331
8
Octal
10137117
10
Decimal
2145871
12
Duodecimal
8759a7
16
Hexadecimal
20be4f
20
Vigesimal
d84db
36
Base36
19zrj
md5
448fd29befecca92fd4dbedb375f6804
sha1
af11932903db20044f40e9827c21c6d6a57af80b
sha256
3e00ab2b39eff5561f38d8aa10a0afdfcf639eae429338db097883e991635970
sha512
134243bd96a06b3e583b21f650b71275ca363d756196735bbccbc20a7a59aef2c014b0ea4611a1ff007a5be53b57e85754f602f06fdc891a982025e9c7f55d6e
ripemd-160
30ac1f1c5bf2037b39a7713580c90d189dffcac7
Diameter
4291742
Circumference
13482905.138303
Area
14466287566017
Volume
4.139038262077E+19
Surface area
57865150264070
Circumference
13482905.138303
Perimeter
8583484
Area
4604762348641
Diagonal
3034719.8713031
Surface area
27628574091846
Volume
9.8812259858406E+18
Space diagonal
3716757.5984886
Perimeter
6437613
Area
1993920586156.6
Altitude
1858378.7992443
Surface area
1993920586156.6
Volume
1.1645136501708E+18
Height
1011573.2904344