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

21000665 (number)

21000665 is an odd 8-digits composite number following 21000664 and preceding 21000666. In scientific notation, it is written as 2.1000665 × 10^7. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 14400288 positive integers (up to 21000665) that are relatively prime to 21000665.

Interesting facts

21000665 has 4 divisors, whose sum is 21086628
The reverse of 21000665 is 56600012
Previous prime number is 245

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

Name	twenty-one million six hundred sixty-five

Notation

Scientific notation	2.1000665 × 10^7
Engineering notation	2.1000665 × 10^6

Prime Factorization of 21000665

Prime Factorization 245 × 85717

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21000665	Product of the distinct prime numbers

The prime factorization of 21000665 is 245 × 85717. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 7, 86, 59, 774, 28, 6834, 2384, 73361, 30481, 844547, 48710, 2544060, 5943182, 95472281, 24030201, 312350314, 363295747, 1293076191, 7250361759

Basic calculations (n = 21000665)

Multiplication

n×y

n×2	42001330
n×3	63001995
n×4	84002660
n×5	105003325

Division

n÷y

n÷2	10500332.5
n÷3	7000221.6666667
n÷3	5250166.25
n÷5	4200133

Exponentiation

n^y

n²	441027930442225
n³	9.2618798228605E+21
n⁴	1.9450563543015E+29
n⁵	4.0847476902808E+36

Nth Root

^y√n

²√n	4582.6482518299
³√n	275.89532980511
⁴√n	67.695260187327
⁵√n	29.137119117344

Divisors of 21000665

1, 245, 85717, 21000665

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	-21000664	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 21000665 can be divided by 4 positive divisors. The sum of these divisors (counting 21000665) is 1, the average is 0.25.

Base conversion 21000665

Base	System	Value
2	Binary	1010000000111000111011001
3	Ternary	1110111221111102
4	Quaternary	1100013013121
5	Quinary	20334010130
6	Senary	2030041145
8	Octal	120070731
10	Decimal	21000665
12	Duodecimal	70491b5
16	Hexadecimal	14071d9
20	Vigesimal	6b51d5
36	Base36	ci47t

Cryptographic Hash Functions

md5	7a8c4e5e6b9dc0a0842b7b58145ef8c5
sha1	01dde02708a887992e4acfdb55fb0fcc9cae93da
sha256	e933c0d990c97ab11140f88cf03af03bb38a206a3501793c3d9fd238f4fd88e0
sha512	9107fe7334ddfe2a75ae8a3a382164599ce554d61445dd16380ae4a14845d2669a4bb460e360387fdbd91ddcf05c07c681277dfa0dc6de193b37e7a200b30d56
ripemd-160	15743135ff606897596772e823af6cda25063e14

21000665 as geometric shapes

Circle

Radius = n

Diameter	42001330
Circumference	131951069.769
Area	1.3855301063052E+15

Sphere

Radius = n

Volume	3.8796071479907E+22
Surface area	5.5421204252208E+15
Circumference	131951069.769

Square

Length = n

Perimeter	84002660
Area	441027930442225
Diagonal	29699425.261854

Cube

Length = n

Surface area	2646167582653350
Volume	9.2618798228605E+21
Space diagonal	36374218.772733

Equilateral Triangle

Length = n

Perimeter	63001995
Area	1.9097069577072E+14
Altitude	18187109.386367

Triangular Pyramid

Length = n

Surface area	1.9097069577072E+14
Volume	1.0915230048799E+21
Height	9899808.420618