1221856 is an even 7-digits composite number following 1221855
and preceding 1221857 . In scientific notation, it is written as 1.221856 × 10^6.
The sum of its digits is 25. It has a total of 6 prime factors and 12 positive divisors.
There are 610912 positive integers (up to 1221856) that are relatively prime to 1221856.
1221856 has 12 divisors, whose sum is 2405592
The reverse of 1221856 is 6581221
Previous prime number is 2
Is Prime? no
Number parity even
Number length 7
Sum of Digits 25
Digital Root 7
Name
one million two hundred twenty-one thousand eight hundred fifty-six
Scientific notation
1.221856 × 10^6
Engineering notation
1.221856 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 2 × 38183
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
76366
Product of the distinct prime numbers
The prime factorization of 1221856 is 2 × 2 × 2 × 2 × 2 × 38183.
Since it has a total of 6 prime factors.
8 , 4 , 61 , 45 , 444 , 619 , 5731 , 2024 , 16663 , 38830 , 423318 , 22626 , 2303565 , 7446930 , 88644371 , 93420843 , 957536604 , 72573806 , 4740865572 , 8575450926
n×2
2443712
n×3
3665568
n×4
4887424
n×5
6109280
n÷2
610928
n÷3
407285.33333333
n÷3
305464
n÷5
244371.2
n2
1492932084736
n3
1824148025327190016
n4
2.2288462096342E+24
n5
2.7233291143188E+30
2 √n
1105.3759541441
3 √n
106.90713111173
4 √n
33.247194680816
5 √n
16.496963182676
1 , 2 , 4 , 8 , 16 , 32 , 38183 , 76366 , 152732 , 305464 , 610928 , 1221856
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1221855
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1221856 can be divided by 12 positive divisors.
The sum of these divisors (counting 1221856) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100101010010011100000
3
Ternary
2022002001221
4
Quaternary
10222103200
5
Quinary
303044411
6
Senary
42104424
8
Octal
4522340
10
Decimal
1221856
12
Duodecimal
4ab114
16
Hexadecimal
12a4e0
20
Vigesimal
7cecg
36
Base36
q6sg
md5
9d521cd1f5b1709371db9bb155e895d1
sha1
4d209961a318e4685ffb79d075056736e1227c1f
sha256
80f58735eea5534b20fbbe8e5462e9ea22ef30f97dfe7e5bf724da9db10cb157
sha512
941a127cf23bca60bc0fd9ba4ab5163f32b1df91dfd74315b7bc74a097203e27ea5dedc98f0b93a1ad692c790ca86ffd42820d76f74f3cc3a894c751dd0225ed
ripemd-160
d9cc5a7c7c776d381047b4bf583058ae1dd312f5
Diameter
2443712
Circumference
7677147.6666892
Area
4690184469715.1
Volume
7.640973380571E+18
Surface area
18760737878860
Circumference
7677147.6666892
Perimeter
4887424
Area
1492932084736
Diagonal
1727965.3264669
Surface area
8957592508416
Volume
1824148025327190016
Space diagonal
2116316.6715329
Perimeter
3665568
Area
646458555753.12
Altitude
1058158.3357664
Surface area
646458555753.12
Volume
2.1497790643282E+17
Height
575988.44215565