21687923 is an odd 8-digits prime number following 21687922
and preceding 21687924 . In scientific notation, it is written as 2.1687923 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 21687922 positive integers (up to 21687923) that are relatively prime to 21687923.
21687923 has 2 divisors, whose sum is 21687924
The reverse of 21687923 is 32978612
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 38 Digital Root 2
Name
twenty-one million six hundred eighty-seven thousand nine hundred twenty-three
Scientific notation
2.1687923 × 10^7
Engineering notation
2.1687923 × 10^6
Prime Factorization
21687923
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21687923 Product of the distinct prime numbers
The prime factorization of 21687923 is 21687923.
Since it has a total of 1 prime factors.
2 , 10 , 50 , 100 , 131 , 735 , 6922 , 2377 , 47116 , 82514 , 103787 , 31884 , 6622828 , 9594694 , 12841693 , 38487228 , 322236774 , 915615127 , 4846482522 , 1261797181
n×2
43375846
n×3
65063769
n×4
86751692
n×5
108439615
n÷2
10843961.5
n÷3
7229307.6666667
n÷3
5421980.75
n÷5
4337584.6
n2
470366004053929
n3
1.0201261677739E+22
n4
2.2124417776966E+29
n5
4.7983266916667E+36
2 √n4657.0294179874
3 √n278.87269106826
4 √n68.242431213926
5 √n29.325376225191
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21687924 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10843962 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4657.029525352 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999077828 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21687923 can be divided by 2 positive divisors.
The sum of these divisors (counting 21687923) is 21687924, the average is 10843962.
Base
System
Value
2
Binary
1010010101110111001110011
3
Ternary
1111210212020102
4
Quaternary
1102232321303
5
Quinary
21023003143
6
Senary
2052503015
8
Octal
122567163
10
Decimal
21687923
12
Duodecimal
731aa6b
16
Hexadecimal
14aee73
20
Vigesimal
6fajg3
36
Base36
cwuib
md5
198dc6b37b737be91ba254db4835b5d5
sha1
56a49d980097aac91ad9ea3905c41333896629cb
sha256
925fda1db99bd63f8b8164df59bcd384398f4dc4dfcee93066e9a7bbe9c2a85c
sha512
7a14d790d5e5f11e3f3fbabb43193a454dc514021769cb4102a8218f97d0a46c19b6c2289196a1a15f8e9e911888d5d15bf7f7b06f3ffdd469fdb4908abebd40
ripemd-160
738f0d8d28705056507db7af98cc908aaf8fd710
Diameter
43375846
Circumference
136269239.13684
Area
1.4776983828342E+15
Volume
4.2730944992177E+22
Surface area
5.9107935313368E+15
Circumference
136269239.13684
Perimeter
86751692
Area
470366004053929
Diagonal
30671354.846303
Surface area
2822196024323574
Volume
1.0201261677739E+22
Space diagonal
37564584.546642
Perimeter
65063769
Area
2.0367445429364E+14
Altitude
18782292.273321
Surface area
2.0367445429364E+14
Volume
1.2022302181647E+21
Height
10223784.948768