21492387 is an odd 8-digits composite number following 21492386
and preceding 21492388 . In scientific notation, it is written as 2.1492387 × 10^7.
The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors.
There are 12151296 positive integers (up to 21492387) that are relatively prime to 21492387.
21492387 has 24 divisors, whose sum is 35855456
The reverse of 21492387 is 78329412
Previous prime number is 97
Is Prime? no Number parity odd Number length 8 Sum of Digits 36 Digital Root 9
Name
twenty-one million four hundred ninety-two thousand three hundred eighty-seven
Scientific notation
2.1492387 × 10^7
Engineering notation
2.1492387 × 10^6
Prime Factorization
3 × 7 × 3 × 97 × 3517
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
7164129 Product of the distinct prime numbers
The prime factorization of 21492387 is 3 × 7 × 3 × 97 × 3517.
Since it has a total of 5 prime factors.
1 , 1 , 17 , 1 , 852 , 36 , 1839 , 970 , 88366 , 90938 , 157211 , 435757 , 1675583 , 4207042 , 20374381 , 98884163 , 744508049 , 601724265 , 1291220955 , 6977361708
n×2
42984774
n×3
64477161
n×4
85969548
n×5
107461935
n÷2
10746193.5
n÷3
7164129
n÷3
5373096.75
n÷5
4298477.4
n2
461922698957769
n3
9.9278214100849E+21
n4
2.1337257981243E+29
n5
4.5858860605171E+36
2 √n4635.9882441611
3 √n278.0320641725
4 √n68.088091794095
5 √n29.272305594158
1 , 3 , 7 , 9 , 21 , 63 , 97 , 291 , 679 , 873 , 2037 , 3517 , 6111 , 10551 , 24619 , 31653 , 73857 , 221571 , 341149 , 1023447 , 2388043 , 3070341 , 7164129 , 21492387
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-21492386 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21492387 can be divided by 24 positive divisors.
The sum of these divisors (counting 21492387) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1010001111111001010100011
3
Ternary
1111102221000100
4
Quaternary
1101333022203
5
Quinary
21000224022
6
Senary
2044353443
8
Octal
121771243
10
Decimal
21492387
12
Duodecimal
7245883
16
Hexadecimal
147f2a3
20
Vigesimal
6e6aj7
36
Base36
csnmr
md5
2303f21bb820aa12f9f1bbf37057cbce
sha1
3dc719c674928fb696aa567270a94b57ece29dfb
sha256
4c72ce2f45c6f60cd852f8c227c09e53e983f7623658f67edb9c4d644473192e
sha512
b6045db24a65391354adb1f034d7815cba32cbf030cb7f123b704dc7bfd023366345bd93cc8d380af3538c711dbc2c76946070732f218ad2ad0ccb4ec5eed21b
ripemd-160
557d050d1c2f4834f43b2e857fae5612479e1f62
Diameter
42984774
Circumference
135040650.21462
Area
1.4511729575721E+15
Volume
4.1585561077432E+22
Surface area
5.8046918302884E+15
Circumference
135040650.21462
Perimeter
85969548
Area
461922698957769
Diagonal
30394825.183171
Surface area
2771536193746614
Volume
9.9278214100849E+21
Space diagonal
37225906.259933
Perimeter
64477161
Area
2.0001839594105E+14
Altitude
18612953.129966
Surface area
2.0001839594105E+14
Volume
1.17000497358E+21
Height
10131608.39439