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

21007905 (number)

21007905 is an odd 8-digits composite number following 21007904 and preceding 21007906. In scientific notation, it is written as 2.1007905 × 10^7. The sum of its digits is 24. It has a total of 2 prime factors and 4 positive divisors. There are 11204208 positive integers (up to 21007905) that are relatively prime to 21007905.

Interesting facts

21007905 has 4 divisors, whose sum is 22408448
The reverse of 21007905 is 50970012
Previous prime number is 15

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6

Name

Name	twenty-one million seven thousand nine hundred five

Notation

Scientific notation	2.1007905 × 10^7
Engineering notation	2.1007905 × 10^6

Prime Factorization of 21007905

Prime Factorization 15 × 1400527

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21007905	Product of the distinct prime numbers

The prime factorization of 21007905 is 15 × 1400527. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 10, 42, 76, 906, 605, 1817, 7951, 54600, 43375, 197560, 709718, 7970748, 5225025, 4524596, 54899230, 199621533, 868617036, 2922445170, 6540497035

Basic calculations (n = 21007905)

Multiplication

n×y

n×2	42015810
n×3	63023715
n×4	84031620
n×5	105039525

Division

n÷y

n÷2	10503952.5
n÷3	7002635
n÷3	5251976.25
n÷5	4201581

Exponentiation

n^y

n²	441332072489025
n³	9.2714622523026E+21
n⁴	1.9477399820746E+29
n⁵	4.0917936508124E+36

Nth Root

^y√n

²√n	4583.4381200143
³√n	275.92703122484
⁴√n	67.701093935137
⁵√n	29.139127850476

Divisors of 21007905

1, 15, 1400527, 21007905

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	-21007904	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 21007905 can be divided by 4 positive divisors. The sum of these divisors (counting 21007905) is 1, the average is 0.25.

Base conversion 21007905

Base	System	Value
2	Binary	1010000001000111000100001
3	Ternary	1110112022102120
4	Quaternary	1100020320201
5	Quinary	20334223110
6	Senary	2030134453
8	Octal	120107041
10	Decimal	21007905
12	Duodecimal	7051429
16	Hexadecimal	1408e21
20	Vigesimal	6b5jf5
36	Base36	ci9sx

Cryptographic Hash Functions

md5	f5d92a41cd267d9aabaed318d91932cf
sha1	3b721addac2ee0a672a95f363e8b62dcec9ceff4
sha256	2d57cf94fef79192f5502825305b5097b8893d9698d65babd54fd60c0b2dbc4c
sha512	ab202ef02bafcb058ea8da52a9a3191e65756b37fa7a95b6d3b7c8a181d08c67b207046a696a412636abb145ea1aa413f7f1c077cbea14e6e57fc553e7b7f9f4
ripemd-160	d841387537a528debfde49fe71dc3a3e29c7f782

21007905 as geometric shapes

Circle

Radius = n

Diameter	42015810
Circumference	131996560.03062
Area	1.3864855967251E+15

Sphere

Radius = n

Volume	3.8836210266492E+22
Surface area	5.5459423869003E+15
Circumference	131996560.03062

Square

Length = n

Perimeter	84031620
Area	441332072489025
Diagonal	29709664.168046

Cube

Length = n

Surface area	2647992434934150
Volume	9.2714622523026E+21
Space diagonal	36386758.82058

Equilateral Triangle

Length = n

Perimeter	63023715
Area	1.9110239314017E+14
Altitude	18193379.41029

Triangular Pyramid

Length = n

Surface area	1.9110239314017E+14
Volume	1.0926523050197E+21
Height	9903221.3893485