1221000855 is an odd 10-digits composite number following 1221000854
and preceding 1221000856 . In scientific notation, it is written as 1.221000855 × 10^9.
The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors.
There are 646446080 positive integers (up to 1221000855) that are relatively prime to 1221000855.
1221000855 has 16 divisors, whose sum is 1967864544
The reverse of 1221000855 is 5580001221
Previous prime number is 137
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 24
Digital Root 6
Name
one billion two hundred twenty-one million eight hundred fifty-five
Scientific notation
1.221000855 × 10^9
Engineering notation
1.221000855 × 10^9
Prime Factorization
5 × 3 × 137 × 594161
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1221000855
Product of the distinct prime numbers
The prime factorization of 1221000855 is 5 × 3 × 137 × 594161.
Since it has a total of 4 prime factors.
4 , 7 , 17 , 29 , 245 , 828 , 2578 , 1493 , 50057 , 95127 , 904105 , 289486 , 7000382 , 576622 , 40011815 , 77589139 , 537952603 , 285593335 , 8992506459 , 8123535250
n×2
2442001710
n×3
3663002565
n×4
4884003420
n×5
6105004275
n÷2
610500427.5
n÷3
407000285
n÷3
305250213.75
n÷5
244200171
n2
1490843087910731025
n3
1.8203206850098E+27
n4
2.2226131127712E+36
n5
2.7138125110279E+45
2 √n
34942.822653587
3 √n
1068.8218479108
4 √n
186.9299939913
5 √n
65.66639785377
1 , 3 , 5 , 15 , 137 , 411 , 685 , 2055 , 594161 , 1782483 , 2970805 , 8912415 , 81400057 , 244200171 , 407000285 , 1221000855
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
-1221000854
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 1221000855 can be divided by 16 positive divisors.
The sum of these divisors (counting 1221000855) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001000110001101111111010010111
3
Ternary
10011002112021021220
4
Quaternary
1020301233322113
5
Quinary
10000034011410
6
Senary
321054141423
8
Octal
11061577227
10
Decimal
1221000855
12
Duodecimal
2a0ab1873
16
Hexadecimal
48c6fe97
20
Vigesimal
j1b522f
36
Base36
k6yaaf
md5
d4ef7b26eeed65364d52baae46884a17
sha1
e54dd9a424dc7edd7e9d6d9f4a03cb620b0047db
sha256
30ca0c1e9948df49df93b08fb5e7f4613fa294fb14eb2eadcd571aeadab79c91
sha512
bccc5191fe276b2e4a5a54685a6f1fa644c2a722804e3b7a8e85cdaab7da91d76cbb7c79e6ff216dedc81223182416ac0d36be03d8106eb1e92c2dd1db30b680
ripemd-160
69d0445d76b424f6ec3950bf96c841427a9f728b
Diameter
2442001710
Circumference
7671774632.1897
Area
4.6836216926355E+18
Volume
7.6249414549393E+27
Surface area
1.8734486770542E+19
Circumference
7671774632.1897
Perimeter
4884003420
Area
1490843087910731025
Diagonal
1726755968.8101
Surface area
8945058527464386150
Volume
1.8203206850098E+27
Space diagonal
2114835516.945
Perimeter
3663002565
Area
6.4555399359357E+17
Altitude
1057417758.4725
Surface area
6.4555399359357E+17
Volume
2.1452685005077E+26
Height
575585322.93672