1212821805 is an odd 10-digits composite number following 1212821804
and preceding 1212821806 . In scientific notation, it is written as 1.212821805 × 10^9.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 596134656 positive integers (up to 1212821805) that are relatively prime to 1212821805.
1212821805 has 16 divisors, whose sum is 1495071360
The reverse of 1212821805 is 5081282121
Previous prime number is 677
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 30
Digital Root 3
Name
one billion two hundred twelve million eight hundred twenty-one thousand eight hundred five
Scientific notation
1.212821805 × 10^9
Engineering notation
1.212821805 × 10^9
Prime Factorization
5 × 39 × 677 × 9187
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1212821805
Product of the distinct prime numbers
The prime factorization of 1212821805 is 5 × 39 × 677 × 9187.
Since it has a total of 4 prime factors.
3 , 8 , 77 , 54 , 419 , 106 , 5830 , 1014 , 17795 , 95788 , 975106 , 212625 , 2740046 , 2124894 , 4430475 , 2084152 , 98917230 , 870576901 , 8319127649 , 994556883
n×2
2425643610
n×3
3638465415
n×4
4851287220
n×5
6064109025
n÷2
606410902.5
n÷3
404273935
n÷3
303205451.25
n÷5
242564361
n2
1470936730683458025
n3
1.7839841407483E+27
n4
2.1636548656737E+36
n5
2.6241277995835E+45
2 √n
34825.591236905
3 √n
1066.4299467645
4 √n
186.61616017083
5 √n
65.578186012314
1 , 5 , 39 , 195 , 677 , 3385 , 9187 , 26403 , 45935 , 132015 , 358293 , 1791465 , 6219599 , 31097995 , 242564361 , 1212821805
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1212821804
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1212821805 can be divided by 16 positive divisors.
The sum of these divisors (counting 1212821805) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001000010010100011000100101101
3
Ternary
10010112010201202010
4
Quaternary
1020102203010231
5
Quinary
4440440244210
6
Senary
320202551433
8
Octal
11022430455
10
Decimal
1212821805
12
Duodecimal
29a208579
16
Hexadecimal
484a312d
20
Vigesimal
ij02ea5
36
Base36
k22zal
md5
91e383b37cc0db8eca8340f80fb09713
sha1
dd27d618fe03abb17f600a8ac97d597e91e5e8f3
sha256
1d38f81afd506620911bfaaa62e21ee1b2e74aea99024121f2901ed014599b22
sha512
fff552c9c660ad145b459226677772dff703ae14ae29c7ed0d2fb33e601434ebbe9e05ad58bb79b987513d8358d61908ee514eb53eac0c91a3bcc5f808ae0dce
ripemd-160
bcbccc6c327793bff155e5427472601addb6cc51
Diameter
2425643610
Circumference
7620384145.403
Area
4.6210840270105E+18
Volume
7.4727352942608E+27
Surface area
1.8484336108042E+19
Circumference
7620384145.403
Perimeter
4851287220
Area
1470936730683458025
Diagonal
1715189045.3728
Surface area
8825620384100748150
Volume
1.7839841407483E+27
Space diagonal
2100668986.7874
Perimeter
3638465415
Area
6.3693428806575E+17
Altitude
1050334493.3937
Surface area
6.3693428806575E+17
Volume
2.1024454724206E+26
Height
571729681.79094