21486989 is an odd 8-digits prime number following 21486988
and preceding 21486990 . In scientific notation, it is written as 2.1486989 × 10^7.
The sum of its digits is 47. It has a total of 1 prime factors and 2 positive divisors.
There are 21486988 positive integers (up to 21486989) that are relatively prime to 21486989.
21486989 has 2 divisors, whose sum is 21486990
The reverse of 21486989 is 98968412
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 47 Digital Root 2
Name
twenty-one million four hundred eighty-six thousand nine hundred eighty-nine
Scientific notation
2.1486989 × 10^7
Engineering notation
2.1486989 × 10^6
Prime Factorization
21486989
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21486989 Product of the distinct prime numbers
The prime factorization of 21486989 is 21486989.
Since it has a total of 1 prime factors.
8 , 5 , 11 , 27 , 867 , 370 , 1917 , 3849 , 68192 , 32040 , 348791 , 12019 , 2578170 , 542505 , 77661624 , 1093460 , 969718589 , 44481385 , 6134666592 , 7436939525
n×2
42973978
n×3
64460967
n×4
85947956
n×5
107434945
n÷2
10743494.5
n÷3
7162329.6666667
n÷3
5371747.25
n÷5
4297397.8
n2
461690696286121
n3
9.9203429125022E+21
n4
2.1315829903716E+29
n5
4.5801300266702E+36
2 √n4635.4060232088
3 √n278.00878549949
4 √n68.083816162204
5 √n29.270835047565
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21486990 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10743495 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4635.4061310742 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999069204 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21486989 can be divided by 2 positive divisors.
The sum of these divisors (counting 21486989) is 21486990, the average is 10743495.
Base
System
Value
2
Binary
1010001111101110110001101
3
Ternary
1111102122121102
4
Quaternary
1101331312031
5
Quinary
21000040424
6
Senary
2044312445
8
Octal
121756615
10
Decimal
21486989
12
Duodecimal
7242725
16
Hexadecimal
147dd8d
20
Vigesimal
6e5h99
36
Base36
csjgt
md5
3b223ec72bf61bc42f05ddcf9eeac798
sha1
c08cce4e4d293ab4313371c55fde572b05cdbca9
sha256
4b97c5b39f1ce7d50b5fe9e95e89be275ee927beb4f9e657aa34ebc452c1f189
sha512
200390616dd3963f7a80f42ecc9a73144d8a4b5d807572d0de40a847b28c47cb4e7629402c125c14072148ce587ba34a58e013794e4d35994c4c23c2a4092b9e
ripemd-160
29aaea8857b2c2771dd9746f830d93d823bed617
Diameter
42973978
Circumference
135006733.58033
Area
1.4504440996832E+15
Volume
4.1554235220011E+22
Surface area
5.8017763987329E+15
Circumference
135006733.58033
Perimeter
85947956
Area
461690696286121
Diagonal
30387191.258362
Surface area
2770144177716726
Volume
9.9203429125022E+21
Space diagonal
37216556.649674
Perimeter
64460967
Area
1.9991793583735E+14
Altitude
18608278.324837
Surface area
1.9991793583735E+14
Volume
1.1691236241877E+21
Height
10129063.752787