21031255 is an odd 8-digits composite number following 21031254
and preceding 21031256 . In scientific notation, it is written as 2.1031255 × 10^7.
The sum of its digits is 19. It has a total of 3 prime factors and 8 positive divisors.
There are 14421408 positive integers (up to 21031255) that are relatively prime to 21031255.
21031255 has 8 divisors, whose sum is 28842912
The reverse of 21031255 is 55213012
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty-one million thirty-one thousand two hundred fifty-five
Scientific notation
2.1031255 × 10^7
Engineering notation
2.1031255 × 10^6
Prime Factorization
5 × 7 × 600893
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21031255
Product of the distinct prime numbers
The prime factorization of 21031255 is 5 × 7 × 600893.
Since it has a total of 3 prime factors.
2 , 9 , 29 , 75 , 559 , 944 , 3373 , 6154 , 97618 , 36053 , 684474 , 647581 , 6768840 , 3682971 , 10749729 , 46105192 , 468898588 , 957752296 , 957104427 , 2020713818
n×2
42062510
n×3
63093765
n×4
84125020
n×5
105156275
n÷2
10515627.5
n÷3
7010418.3333333
n÷3
5257813.75
n÷5
4206251
n2
442313686875025
n3
9.3024119386588E+21
n4
1.9564139759698E+29
n5
4.1145841214184E+36
2 √n
4585.9846271003
3 √n
276.0292230837
4 √n
67.719898309878
5 √n
29.145602521181
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21031254
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031255 can be divided by 8 positive divisors.
The sum of these divisors (counting 21031255) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001110100101010111
3
Ternary
1110120111110101
4
Quaternary
1100032211113
5
Quinary
20341000010
6
Senary
2030434531
8
Octal
120164527
10
Decimal
21031255
12
Duodecimal
7062a47
16
Hexadecimal
140e957
20
Vigesimal
6b8i2f
36
Base36
cirtj
md5
7caad4c0f6970b52ab11098a5d9fac6f
sha1
9d15368171737ed3ae2a0c890c81c974a58786c7
sha256
5a6a3298ff9092706fab2501c0ea339ef3a37c2a99befd8b76c6dcaf94a18cf2
sha512
ba0fd850d397f3370fb0df756aa70c4407b151211bdf66a1dd1a0b7adfc78b8c36143f6699e1692d3c2d6961a38dccb1d9a6affaa993ae05c00ff6fb0f91c6dd
ripemd-160
cf30aaf5252c8f11c2a015bd96f53b2b45df3a83
Diameter
42062510
Circumference
132143272.40755
Area
1.3895694292688E+15
Volume
3.8965852009542E+22
Surface area
5.5582777170752E+15
Circumference
132143272.40755
Perimeter
84125020
Area
442313686875025
Diagonal
29742686.054727
Surface area
2653882121250150
Volume
9.3024119386588E+21
Space diagonal
36427202.206937
Perimeter
63093765
Area
1.9152744463766E+14
Altitude
18213601.103468
Surface area
1.9152744463766E+14
Volume
1.0962997605361E+21
Height
9914228.684909