1281290 is an even 7-digits composite number following 1281289
and preceding 1281291 . In scientific notation, it is written as 1.281290 × 10^6.
The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors.
There are 482304 positive integers (up to 1281290) that are relatively prime to 1281290.
1281290 has 16 divisors, whose sum is 2442312
The reverse of 1281290 is 0921821
Previous prime number is 17
Is Prime? no
Number parity even
Number length 7
Sum of Digits 23
Digital Root 5
Name
one million two hundred eighty-one thousand two hundred ninety
Scientific notation
1.281290 × 10^6
Engineering notation
1.281290 × 10^6
Prime Factorization
2 × 5 × 17 × 7537
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1281290
Product of the distinct prime numbers
The prime factorization of 1281290 is 2 × 5 × 17 × 7537.
Since it has a total of 4 prime factors.
4 , 7 , 27 , 51 , 393 , 54 , 1352 , 8645 , 82682 , 78744 , 38731 , 292682 , 3880999 , 2452604 , 79352033 , 19428158 , 221773685 , 221997571 , 6192623194 , 8924829854
n×2
2562580
n×3
3843870
n×4
5125160
n×5
6406450
n÷2
640645
n÷3
427096.66666667
n÷3
320322.5
n÷5
256258
n2
1641704064100
n3
2103499000290689000
n4
2.6951922340825E+24
n5
3.4533228576075E+30
2 √n
1131.9408111734
3 √n
108.61316740406
4 √n
33.64432806839
5 √n
16.654419025992
1 , 2 , 5 , 10 , 17 , 34 , 85 , 170 , 7537 , 15074 , 37685 , 75370 , 128129 , 256258 , 640645 , 1281290
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
-1281289
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 1281290 can be divided by 16 positive divisors.
The sum of these divisors (counting 1281290) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000110100001010
3
Ternary
2102002121012
4
Quaternary
10320310022
5
Quinary
312000130
6
Senary
43243522
8
Octal
4706412
10
Decimal
1281290
12
Duodecimal
5195a2
16
Hexadecimal
138d0a
20
Vigesimal
8034a
36
Base36
rgne
md5
edb3bf3b4c4dd7ef06fa3d36ca1f8825
sha1
3b1a3e1f4575fcb02536bdb1a2a1fe32bded9f8c
sha256
ed0b31f37d4872433eddf936426025c56bee4972e0675885fcd9a724af7dc7bb
sha512
00a2316bb60bc1b5d3f3248c4e945931dfb5233fd128486666d7be51032d669027f664172afe56c67d3d8a270af5cc97e4534d02a33b0f3d9f6c98c4c8ad0b32
ripemd-160
fa93c2997e3b7540af3d4e73abc6e471cfe31b09
Diameter
2562580
Circumference
8050582.5022361
Area
5157565427145.1
Volume
8.8111160081956E+18
Surface area
20630261708580
Circumference
8050582.5022361
Perimeter
5125160
Area
1641704064100
Diagonal
1812017.695333
Surface area
9850224384600
Volume
2103499000290689000
Space diagonal
2219259.3792299
Perimeter
3843870
Area
710878712503.38
Altitude
1109629.689615
Surface area
710878712503.38
Volume
2.4789973455411E+17
Height
604005.89844434