Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21007918 (number)

21007918 is an even 8-digits composite number following 21007917 and preceding 21007919. In scientific notation, it is written as 2.1007918 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 10503958 positive integers (up to 21007918) that are relatively prime to 21007918.

Interesting facts

21007918 has 4 divisors, whose sum is 31511880
The reverse of 21007918 is 81970012
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty-one million seven thousand nine hundred eighteen

Notation

Scientific notation	2.1007918 × 10^7
Engineering notation	2.1007918 × 10^6

Prime Factorization of 21007918

Prime Factorization 2 × 10503959

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21007918	Product of the distinct prime numbers

The prime factorization of 21007918 is 2 × 10503959. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 2, 5, 30, 554, 200, 4507, 8009, 28227, 59562, 272539, 707414, 8978779, 4918680, 45036424, 6646236, 462214452, 388569295, 3338525664, 974670857

Basic calculations (n = 21007918)

Multiplication

n×y

n×2	42015836
n×3	63023754
n×4	84031672
n×5	105039590

Division

n÷y

n÷2	10503959
n÷3	7002639.3333333
n÷3	5251979.5
n÷5	4201583.6

Exponentiation

n^y

n²	441332618694724
n³	9.271479464264E+21
n⁴	1.9477448032394E+29
n⁵	4.091806311138E+36

Nth Root

^y√n

²√n	4583.4395381635
³√n	275.92708814073
⁴√n	67.701104408742
⁵√n	29.139131456819

Divisors of 21007918

1, 2, 10503959, 21007918

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	-21007917	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 21007918 can be divided by 4 positive divisors. The sum of these divisors (counting 21007918) is 1, the average is 0.25.

Base conversion 21007918

Base	System	Value
2	Binary	1010000001000111000101110
3	Ternary	1110112022110001
4	Quaternary	1100020320232
5	Quinary	20334223133
6	Senary	2030134514
8	Octal	120107056
10	Decimal	21007918
12	Duodecimal	705143a
16	Hexadecimal	1408e2e
20	Vigesimal	6b5jfi
36	Base36	ci9ta

Cryptographic Hash Functions

md5	869be412b4c82b47a3efc5c80101c390
sha1	f6aa315cb4598b44ced11ed17aa6905cea3be109
sha256	36b44ab67397b99f6f7bae519747d9a07b2074383e25a80305b0980f4584b99f
sha512	711ad95641b77f5f70b18a765a04000dd9b74f2ec9c3b09b356e5bb8627e0cdb1aefe79b0eead4298148f75b0d46c67ed4695515891f290bdc739c1515ad0caf
ripemd-160	c022bba6d8ebc9179bd3c216cc8c58fc8213e97b

21007918 as geometric shapes

Circle

Radius = n

Diameter	42015836
Circumference	131996641.71203
Area	1.3864873126809E+15

Sphere

Radius = n

Volume	3.8836282363787E+22
Surface area	5.5459492507236E+15
Circumference	131996641.71203

Square

Length = n

Perimeter	84031672
Area	441332618694724
Diagonal	29709682.552822

Cube

Length = n

Surface area	2647995712168344
Volume	9.271479464264E+21
Space diagonal	36386781.337241

Equilateral Triangle

Length = n

Perimeter	63023754
Area	1.9110262965417E+14
Altitude	18193390.66862

Triangular Pyramid

Length = n

Surface area	1.9110262965417E+14
Volume	1.0926543334688E+21
Height	9903227.5176073