21056989 is an odd 8-digits composite number following 21056988
and preceding 21056990 . In scientific notation, it is written as 2.1056989 × 10^7.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 21043260 positive integers (up to 21056989) that are relatively prime to 21056989.
21056989 has 4 divisors, whose sum is 21070720
The reverse of 21056989 is 98965012
Previous prime number is 11971
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
twenty-one million fifty-six thousand nine hundred eighty-nine
Scientific notation
2.1056989 × 10^7
Engineering notation
2.1056989 × 10^6
Prime Factorization
11971 × 1759
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21056989
Product of the distinct prime numbers
The prime factorization of 21056989 is 11971 × 1759.
Since it has a total of 2 prime factors.
1 , 7 , 41 , 48 , 179 , 374 , 8366 , 653 , 98922 , 58987 , 427877 , 408477 , 1252524 , 1630125 , 21560637 , 93435193 , 559553780 , 908098485 , 8159583093 , 5128406571
n×2
42113978
n×3
63170967
n×4
84227956
n×5
105284945
n÷2
10528494.5
n÷3
7018996.3333333
n÷3
5264247.25
n÷5
4211397.8
n2
443396785746121
n3
9.3366012400914E+21
n4
1.9660070960999E+29
n5
4.1398189796498E+36
2 √n
4588.7894917941
3 √n
276.14176099871
4 √n
67.740604454006
5 √n
29.152731587955
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
-21056988
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 21056989 can be divided by 4 positive divisors.
The sum of these divisors (counting 21056989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000010100110111011101
3
Ternary
1110121210202111
4
Quaternary
1100110313131
5
Quinary
20342310424
6
Senary
2031154021
8
Octal
120246735
10
Decimal
21056989
12
Duodecimal
7075911
16
Hexadecimal
1414ddd
20
Vigesimal
6bc299
36
Base36
cjbod
md5
4fa256f136aebdfca4c8cf76fae729ce
sha1
a60ae0941b8a6a2a288055bf503ec421bfa21294
sha256
d4360efad77b10482ba85120fa705ecaeaec5a91b62fcb1a3c8b9a41ccb3332b
sha512
dd97519e3efeaf144369be98f943b4e0ba30f255194612d513417138aec90cd1657155859cf1e6a04cd571c0fc1f56e8677401797ffe31afda434f399257ecfd
ripemd-160
21e8015f2f63d226a18f4e91cee195c7d1276f47
Diameter
42113978
Circumference
132304963.89824
Area
1.3929720847253E+15
Volume
3.9109063820491E+22
Surface area
5.5718883389014E+15
Circumference
132304963.89824
Perimeter
84227956
Area
443396785746121
Diagonal
29779079.426541
Surface area
2660380714476726
Volume
9.3366012400914E+21
Space diagonal
36471774.802419
Perimeter
63170967
Area
1.9199644020625E+14
Altitude
18235887.401209
Surface area
1.9199644020625E+14
Volume
1.1003290083506E+21
Height
9926359.808847