1221570891 is an odd 10-digits composite number following 1221570890
and preceding 1221570892 . In scientific notation, it is written as 1.221570891 × 10^9.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 813960816 positive integers (up to 1221570891) that are relatively prime to 1221570891.
1221570891 has 8 divisors, whose sum is 1358000640
The reverse of 1221570891 is 1980751221
Previous prime number is 1997
Is Prime? no Number parity odd Number length 10 Sum of Digits 36 Digital Root 9
Name
one billion two hundred twenty-one million five hundred seventy thousand eight hundred ninety-one
Scientific notation
1.221570891 × 10^9
Engineering notation
1.221570891 × 10^9
Prime Factorization
9 × 1997 × 67967
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1221570891 Product of the distinct prime numbers
The prime factorization of 1221570891 is 9 × 1997 × 67967.
Since it has a total of 3 prime factors.
6 , 9 , 18 , 34 , 672 , 658 , 2670 , 4915 , 36148 , 64584 , 950461 , 491457 , 3772067 , 4755704 , 81217815 , 11902297 , 773275012 , 897293600 , 9159363104 , 2223026120
n×2
2443141782
n×3
3664712673
n×4
4886283564
n×5
6107854455
n÷2
610785445.5
n÷3
407190297
n÷3
305392722.75
n÷5
244314178.2
n2
1492235441738533881
n3
1.8228713781463E+27
n4
2.2267666135806E+36
n5
2.7201532762007E+45
2 √n34950.978398322
3 √n1068.9881519553
4 √n186.95180768937
5 √n65.672528107051
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
-1221570890 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 1221570891 can be divided by 8 positive divisors.
The sum of these divisors (counting 1221570891) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001000110011111011000101001011
3
Ternary
10011010121020020100
4
Quaternary
1020303323011023
5
Quinary
10000210232031
6
Senary
321114300443
8
Octal
11063730513
10
Decimal
1221570891
12
Duodecimal
2a1127723
16
Hexadecimal
48cfb14b
20
Vigesimal
j1eg74b
36
Base36
k7ai4r
md5
a90a77618d52e6259c066d390a7e1e86
sha1
148dc9f2ef440c51c42d06b2b3cf728f36006d94
sha256
c47377df4c972c830470903b96a00b1fccd56b1ae4fa3345f82b4fc0f5fb17e5
sha512
def47215df58768e39d495aff00f8a822cefff4dee5a4cd562b0c58ad2f6c79e57d17a1f0d2deb275ebf4606a6278ad6380779ec5cdd9ca147065fe793e6b374
ripemd-160
9057b7e7bc791dac8092015919db7223786ae03d
Diameter
2443141782
Circumference
7675356274.0095
Area
4.6879959011921E+18
Volume
7.6356257733648E+27
Surface area
1.8751983604768E+19
Circumference
7675356274.0095
Perimeter
4886283564
Area
1492235441738533881
Diagonal
1727562121.4524
Surface area
8953412650431203286
Volume
1.8228713781463E+27
Space diagonal
2115822848.2592
Perimeter
3664712673
Area
6.4615690048653E+17
Altitude
1057911424.1296
Surface area
6.4615690048653E+17
Volume
2.1482745211969E+26
Height
575854040.48413