1216981 is an odd 7-digits composite number following 1216980
and preceding 1216982 . In scientific notation, it is written as 1.216981 × 10^6.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 1214752 positive integers (up to 1216981) that are relatively prime to 1216981.
1216981 has 4 divisors, whose sum is 1219212
The reverse of 1216981 is 1896121
Previous prime number is 1277
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 28
Digital Root 1
Name
one million two hundred sixteen thousand nine hundred eighty-one
Scientific notation
1.216981 × 10^6
Engineering notation
1.216981 × 10^6
Prime Factorization
1277 × 953
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
1216981
Product of the distinct prime numbers
The prime factorization of 1216981 is 1277 × 953.
Since it has a total of 2 prime factors.
3 , 9 , 74 , 72 , 717 , 710 , 209 , 4528 , 61089 , 85 , 891755 , 938308 , 5120146 , 5201985 , 95674971 , 69519046 , 558279418 , 167640145 , 3241320554 , 874515806
n×2
2433962
n×3
3650943
n×4
4867924
n×5
6084905
n÷2
608490.5
n÷3
405660.33333333
n÷3
304245.25
n÷5
243396.2
n2
1481042754361
n3
1802400892245004141
n4
2.1934876402452E+24
n5
2.6694327819133E+30
2 √n
1103.1686181178
3 √n
106.76476110672
4 √n
33.213982268283
5 √n
16.483778101481
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
-1216980
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 1216981 can be divided by 4 positive divisors.
The sum of these divisors (counting 1216981) is 1, the average is 0.25.
Base
System
Value
2
Binary
100101001000111010101
3
Ternary
2021211101101
4
Quaternary
10221013111
5
Quinary
302420411
6
Senary
42030101
8
Octal
4510725
10
Decimal
1216981
12
Duodecimal
4a8331
16
Hexadecimal
1291d5
20
Vigesimal
7c291
36
Base36
q311
md5
8dcd0b3b2378dabee6f26d1fba53a41a
sha1
898c845dda9131d68d3da64619906321d6528149
sha256
bb0e841259a68792407e32b033e7e592dd900ef2019f7175f8c1cbf3f543fbca
sha512
55a6970dad511dbaff9a77a1c7ac541ae84e34f5717acbe7c4f5b1c9e81a1185c5e54ee3eca309ccf639f408807ec3ca08137d69d483b9520513d6811df506d0
ripemd-160
042ec1514be8f658e648cb2cc36859ef3e0ea087
Diameter
2433962
Circumference
7646517.1383167
Area
4652833036752.9
Volume
7.5498792025341E+18
Surface area
18611332147012
Circumference
7646517.1383167
Perimeter
4867924
Area
1481042754361
Diagonal
1721071.0353504
Surface area
8886256526166
Volume
1802400892245004141
Space diagonal
2107872.923846
Perimeter
3650943
Area
641310324683.75
Altitude
1053936.461923
Surface area
641310324683.75
Volume
2.1241498222052E+17
Height
573690.34511679