21007923 is an odd 8-digits composite number following 21007922
and preceding 21007924 . In scientific notation, it is written as 2.1007923 × 10^7.
The sum of its digits is 24. It has a total of 2 prime factors and 4 positive divisors.
There are 14005280 positive integers (up to 21007923) that are relatively prime to 21007923.
21007923 has 4 divisors, whose sum is 28010568
The reverse of 21007923 is 32970012
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million seven thousand nine hundred twenty-three
Scientific notation
2.1007923 × 10^7
Engineering notation
2.1007923 × 10^6
Prime Factorization
3 × 7002641
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21007923
Product of the distinct prime numbers
The prime factorization of 21007923 is 3 × 7002641.
Since it has a total of 2 prime factors.
3 , 9 , 6 , 79 , 316 , 696 , 6290 , 2343 , 33133 , 12720 , 996685 , 526435 , 1295566 , 7867459 , 87776741 , 52590920 , 769202596 , 36801423 , 5279987168 , 1499778174
n×2
42015846
n×3
63023769
n×4
84031692
n×5
105039615
n÷2
10503961.5
n÷3
7002641
n÷3
5251980.75
n÷5
4201584.6
n2
441332828773929
n3
9.2714860842549E+21
n4
1.947746657536E+29
n5
4.0918111805023E+36
2 √n
4583.4400836053
3 √n
275.92711003145
4 √n
67.701108437051
5 √n
29.139132843874
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21007922
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21007923 can be divided by 4 positive divisors.
The sum of these divisors (counting 21007923) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001000111000110011
3
Ternary
1110112022110020
4
Quaternary
1100020320303
5
Quinary
20334223143
6
Senary
2030134523
8
Octal
120107063
10
Decimal
21007923
12
Duodecimal
7051443
16
Hexadecimal
1408e33
20
Vigesimal
6b5jg3
36
Base36
ci9tf
md5
350cba8f77551cf6b84322a3cfb748e0
sha1
2a8bf16b3a9d021a779156e40f92fcba84f58fe3
sha256
8d42d9cb04a126958795921311949ca1407a78341b46bce672d60ab5da3c6145
sha512
3f1a920d5d9ee097f571f2bb4343f4e220c0aec6a98c1e980915021e3d8bd6b95eb643c86337d8ac09b890e6e4f362b575a1e4d3077f7de928e890feb8ec0731
ripemd-160
800ef01dbb85aeeea6420c2851662b1797d45900
Diameter
42015846
Circumference
131996673.12796
Area
1.3864879726642E+15
Volume
3.883631009354E+22
Surface area
5.5459518906567E+15
Circumference
131996673.12796
Perimeter
84031692
Area
441332828773929
Diagonal
29709689.62389
Surface area
2647996972643574
Volume
9.2714860842549E+21
Space diagonal
36386789.997495
Perimeter
63023769
Area
1.9110272062114E+14
Altitude
18193394.998747
Surface area
1.9110272062114E+14
Volume
1.0926551136422E+21
Height
9903229.8746299