2156821591 is an odd 10-digits composite number following 2156821590
and preceding 2156821592 . In scientific notation, it is written as 2.156821591 × 10^9.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 2081433120 positive integers (up to 2156821591) that are relatively prime to 2156821591.
2156821591 has 8 divisors, whose sum is 2233544544
The reverse of 2156821591 is 1951286512
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 40
Digital Root 4
Name
two billion one hundred fifty-six million eight hundred twenty-one thousand five hundred ninety-one
Scientific notation
2.156821591 × 10^9
Engineering notation
2.156821591 × 10^9
Prime Factorization
53 × 61 × 667127
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2156821591
Product of the distinct prime numbers
The prime factorization of 2156821591 is 53 × 61 × 667127.
Since it has a total of 3 prime factors.
4 , 10 , 44 , 94 , 927 , 935 , 7893 , 1907 , 84789 , 56039 , 214349 , 463594 , 7901237 , 5558916 , 78279962 , 8891870 , 866871604 , 406794977 , 9701565545 , 3068469440
n×2
4313643182
n×3
6470464773
n×4
8627286364
n×5
10784107955
n÷2
1078410795.5
n÷3
718940530.33333
n÷3
539205397.75
n÷5
431364318.2
n2
4651879375403771281
n3
1.0033273875598E+28
n4
2.1639981723307E+37
n5
4.6673579809674E+46
2 √n
46441.593329687
3 √n
1292.0264588239
4 √n
215.50311675168
5 √n
73.580518607103
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
-2156821590
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 2156821591 can be divided by 8 positive divisors.
The sum of these divisors (counting 2156821591) is 1, the average is 0.125.
Base
System
Value
2
Binary
10000000100011100111110001010111
3
Ternary
12120022102220000011
4
Quaternary
2000203213301113
5
Quinary
13404121242331
6
Senary
554004101051
8
Octal
20043476127
10
Decimal
2156821591
12
Duodecimal
502394787
16
Hexadecimal
808e7c57
20
Vigesimal
1de02djb
36
Base36
zo466v
md5
a7173a49f7d04e171cd0f7b5cbb8416a
sha1
22e0b7d685a3354356423356b608a3c07e857d37
sha256
f3e554107a4d50278089be97ac3bad702066311659af03e382dc9f8ad57fae94
sha512
324280ddeae703ae862f07c70e777fd22422cca6e56d22a83514f3e3078c74098fa39b265bd2bc00796a4e484bad852b4cd0d7ce86d126b8cf9d0f6bdeda79ae
ripemd-160
010082f695a2368ee0463abf0f3a57fc0ab7d33f
Diameter
4313643182
Circumference
13551709730.779
Area
1.4614310071154E+19
Volume
4.2027279332046E+28
Surface area
5.8457240284617E+19
Circumference
13551709730.779
Perimeter
8627286364
Area
4651879375403771281
Diagonal
3050206345.6113
Surface area
2.7911276252423E+19
Volume
1.0033273875598E+28
Space diagonal
3735724578.4735
Perimeter
6470464773
Area
2.0143228572203E+18
Altitude
1867862289.2368
Surface area
2.0143228572203E+18
Volume
1.1824326658229E+27
Height
1016735448.5371