21031486 is an even 8-digits composite number following 21031485
and preceding 21031487 . In scientific notation, it is written as 2.1031486 × 10^7.
The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors.
There are 9013452 positive integers (up to 21031486) that are relatively prime to 21031486.
21031486 has 12 divisors, whose sum is 36697968
The reverse of 21031486 is 68413012
Previous prime number is 7
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million thirty-one thousand four hundred eighty-six
Scientific notation
2.1031486 × 10^7
Engineering notation
2.1031486 × 10^6
Prime Factorization
2 × 7 × 7 × 214607
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
3004498
Product of the distinct prime numbers
The prime factorization of 21031486 is 2 × 7 × 7 × 214607.
Since it has a total of 4 prime factors.
1 , 1 , 32 , 3 , 578 , 897 , 1069 , 73 , 7578 , 483 , 713445 , 74477 , 7942732 , 434603 , 90353383 , 58979971 , 727922831 , 408310703 , 883494886 , 2428640603
n×2
42062972
n×3
63094458
n×4
84125944
n×5
105157430
n÷2
10515743
n÷3
7010495.3333333
n÷3
5257871.5
n÷5
4206297.2
n2
442323403368196
n3
9.3027184654106E+21
n4
1.9564999316722E+29
n5
4.1148100921966E+36
2 √n
4586.0098124622
3 √n
276.03023368304
4 √n
67.720084262073
5 √n
29.145666545935
1 , 2 , 7 , 14 , 49 , 98 , 214607 , 429214 , 1502249 , 3004498 , 10515743 , 21031486
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
-21031485
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 21031486 can be divided by 12 positive divisors.
The sum of these divisors (counting 21031486) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010000001110101000111110
3
Ternary
1110120111202221
4
Quaternary
1100032220332
5
Quinary
20341001421
6
Senary
2030435554
8
Octal
120165076
10
Decimal
21031486
12
Duodecimal
7062bba
16
Hexadecimal
140ea3e
20
Vigesimal
6b8ie6
36
Base36
cirzy
md5
c77383e514a81f99c4cc18c0f8535028
sha1
05e64e8ba9148152a4546e52d86151cd66c92e0e
sha256
24f1f090ee6ecc608c286c58fcec792b3332f30555ef64c213fe849273986206
sha512
afbdff68c8c51c4a1388ea238928e6e804dc492717cc42022a3ecc0ab531f2f9710f6145397474e6a592301ef09a52756998208263cbf8fe54cbcca9995535c5
ripemd-160
4ff7fc78f379eb63945ad86b5416a852be1ebf2b
Diameter
42062972
Circumference
132144723.82335
Area
1.3895999545324E+15
Volume
3.8967135985797E+22
Surface area
5.5583998181294E+15
Circumference
132144723.82335
Perimeter
84125944
Area
442323403368196
Diagonal
29743012.73806
Surface area
2653940420209176
Volume
9.3027184654106E+21
Space diagonal
36427602.310674
Perimeter
63094458
Area
1.9153165200262E+14
Altitude
18213801.155337
Surface area
1.9153165200262E+14
Volume
1.0963358850602E+21
Height
9914337.5793533