2145989 is an odd 7-digits composite number following 2145988
and preceding 2145990 . In scientific notation, it is written as 2.145989 × 10^6.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 2138124 positive integers (up to 2145989) that are relatively prime to 2145989.
2145989 has 4 divisors, whose sum is 2153856
The reverse of 2145989 is 9895412
Previous prime number is 283
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 38
Digital Root 2
Name
two million one hundred forty-five thousand nine hundred eighty-nine
Scientific notation
2.145989 × 10^6
Engineering notation
2.145989 × 10^6
Prime Factorization
283 × 7583
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2145989
Product of the distinct prime numbers
The prime factorization of 2145989 is 283 × 7583.
Since it has a total of 2 prime factors.
10 , 5 , 90 , 38 , 371 , 711 , 498 , 7627 , 34485 , 95163 , 510323 , 754796 , 8141334 , 3292595 , 59110882 , 70601589 , 313429197 , 862621740 , 9424873262 , 8438801790
n×2
4291978
n×3
6437967
n×4
8583956
n×5
10729945
n÷2
1072994.5
n÷3
715329.66666667
n÷3
536497.25
n÷5
429197.8
n2
4605268788121
n3
9.882856161351E+18
n4
2.1208500610841E+25
n5
4.5513209017359E+31
2 √n
1464.9194517106
3 √n
128.9859768824
4 √n
38.274266181216
5 √n
18.463987535754
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
-2145988
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 2145989 can be divided by 4 positive divisors.
The sum of these divisors (counting 2145989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000001011111011000101
3
Ternary
11001000202002
4
Quaternary
20023323011
5
Quinary
1022132424
6
Senary
113555045
8
Octal
10137305
10
Decimal
2145989
12
Duodecimal
875a85
16
Hexadecimal
20bec5
20
Vigesimal
d84j9
36
Base36
19zut
md5
d124229a88f38c8b3e96bb516575621a
sha1
8d659d459e21222650c05459247ed29b3f601c14
sha256
a1d6b861e35bf741892b1eee257a10037895f2b76d62e9ed08b660bff5e63540
sha512
cf37ea2023b1adfa86fe73679255f7f6d66e81019cf018b7f9ccb55a387944bfba363f98402ed699567ab5a5c45c7ab1527cfe754b0696c525ecf276b41091c4
ripemd-160
8f28826aae355cf87867f1d8555f5b92b3dc3e61
Diameter
4291978
Circumference
13483646.554169
Area
14467878592567
Volume
4.139721108398E+19
Surface area
57871514370269
Circumference
13483646.554169
Perimeter
8583956
Area
4605268788121
Diagonal
3034886.7485035
Surface area
27631612728726
Volume
9.882856161351E+18
Space diagonal
3716961.9804839
Perimeter
6437967
Area
1994139880884.2
Altitude
1858480.990242
Surface area
1994139880884.2
Volume
1.1647057681971E+18
Height
1011628.9161678