21486988 is an even 8-digits composite number following 21486987
and preceding 21486989 . In scientific notation, it is written as 2.1486988 × 10^7.
The sum of its digits is 46. It has a total of 3 prime factors and 6 positive divisors.
There are 10743492 positive integers (up to 21486988) that are relatively prime to 21486988.
21486988 has 6 divisors, whose sum is 37602236
The reverse of 21486988 is 88968412
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty-one million four hundred eighty-six thousand nine hundred eighty-eight
Scientific notation
2.1486988 × 10^7
Engineering notation
2.1486988 × 10^6
Prime Factorization
2 × 2 × 5371747
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
10743494
Product of the distinct prime numbers
The prime factorization of 21486988 is 2 × 2 × 5371747.
Since it has a total of 3 prime factors.
4 , 4 , 43 , 62 , 692 , 211 , 9336 , 5659 , 3051 , 8898 , 922407 , 597552 , 3672232 , 626895 , 96002025 , 14330689 , 595234596 , 436649794 , 8066103915 , 6878709267
n×2
42973976
n×3
64460964
n×4
85947952
n×5
107434940
n÷2
10743494
n÷3
7162329.3333333
n÷3
5371747
n÷5
4297397.6
n2
461690653312144
n3
9.9203415274302E+21
n4
2.1315825935579E+29
n5
4.5801289608788E+36
2 √n
4635.4059153433
3 √n
278.00878118666
4 √n
68.083815370052
5 √n
29.270834775113
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21486987
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21486988 can be divided by 6 positive divisors.
The sum of these divisors (counting 21486988) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1010001111101110110001100
3
Ternary
1111102122121101
4
Quaternary
1101331312030
5
Quinary
21000040423
6
Senary
2044312444
8
Octal
121756614
10
Decimal
21486988
12
Duodecimal
7242724
16
Hexadecimal
147dd8c
20
Vigesimal
6e5h98
36
Base36
csjgs
md5
040190be394e040e1bd4ac3ce1396623
sha1
34400d1d040842acdaff49234089d3de4f6fdb36
sha256
c369c70c78e900237d3274d34215501562c740da14be792381dfeb7a6e598380
sha512
6b159c76dbca304912d353d602d78e5fe396fa25dcdbf82e82334618c395708c78775d9c6515c3b3750d851fd111cdd327d8b80279b4f48a359a4fb321629231
ripemd-160
27f4ea7a1886848db273215484c6ebd7e8434013
Diameter
42973976
Circumference
135006727.29714
Area
1.4504439646765E+15
Volume
4.1554229418235E+22
Surface area
5.801775858706E+15
Circumference
135006727.29714
Perimeter
85947952
Area
461690653312144
Diagonal
30387189.844148
Surface area
2770143919872864
Volume
9.9203415274302E+21
Space diagonal
37216554.917623
Perimeter
64460964
Area
1.9991791722908E+14
Altitude
18608277.458811
Surface area
1.9991791722908E+14
Volume
1.1691234609554E+21
Height
10129063.281383