1281215 is an odd 7-digits composite number following 1281214
and preceding 1281216 . In scientific notation, it is written as 1.281215 × 10^6.
The sum of its digits is 20. It has a total of 4 prime factors and 16 positive divisors.
There are 903936 positive integers (up to 1281215) that are relatively prime to 1281215.
1281215 has 16 divisors, whose sum is 1729728
The reverse of 1281215 is 5121821
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 20
Digital Root 2
Name
one million two hundred eighty-one thousand two hundred fifteen
Scientific notation
1.281215 × 10^6
Engineering notation
1.281215 × 10^6
Prime Factorization
5 × 23 × 13 × 857
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1281215
Product of the distinct prime numbers
The prime factorization of 1281215 is 5 × 23 × 13 × 857.
Since it has a total of 4 prime factors.
9 , 9 , 16 , 52 , 72 , 282 , 223 , 3527 , 14108 , 74179 , 892992 , 701846 , 5943536 , 6802412 , 41502038 , 44071614 , 100192644 , 783602750 , 3884493474 , 3169594626
n×2
2562430
n×3
3843645
n×4
5124860
n×5
6406075
n÷2
640607.5
n÷3
427071.66666667
n÷3
320303.75
n÷5
256243
n2
1641511876225
n3
2103129638497613375
n4
2.6945612397877E+24
n5
3.4523122788346E+30
2 √n
1131.9076817479
3 √n
108.61104814755
4 √n
33.643835716932
5 √n
16.65422404895
1 , 5 , 13 , 23 , 65 , 115 , 299 , 857 , 1495 , 4285 , 11141 , 19711 , 55705 , 98555 , 256243 , 1281215
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
-1281214
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 1281215 can be divided by 16 positive divisors.
The sum of these divisors (counting 1281215) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000110010111111
3
Ternary
2102002111102
4
Quaternary
10320302333
5
Quinary
311444330
6
Senary
43243315
8
Octal
4706277
10
Decimal
1281215
12
Duodecimal
51953b
16
Hexadecimal
138cbf
20
Vigesimal
8030f
36
Base36
rglb
md5
7749dd13dd61e57903788755a8983ee8
sha1
1cba868b20276d46552032ba38a30bd291f46b52
sha256
53f989665b15253a8e7174a00227bf18393d3c79c78d2d27cb0d1bf47e8d142e
sha512
32a1b25f0c12c9937feb9dd7dfc2b941c8b9d5318f10a05b755969f5fc5419b440c0835da4bc16aa06bc69ee105bc579743a2d77f781ea2fa54f584f50387778
ripemd-160
6267cd36dc49f47da4ff24dd8a4396687ed84325
Diameter
2562430
Circumference
8050111.2633381
Area
5156961651128.9
Volume
8.8095688291347E+18
Surface area
20627846604515
Circumference
8050111.2633381
Perimeter
5124860
Area
1641511876225
Diagonal
1811911.6293158
Surface area
9849071257350
Volume
2103129638497613375
Space diagonal
2219129.4754194
Perimeter
3843645
Area
710795492712.35
Altitude
1109564.7377097
Surface area
710795492712.35
Volume
2.4785620484935E+17
Height
603970.54310528