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

21000645 (number)

21000645 is an odd 8-digits composite number following 21000644 and preceding 21000646. In scientific notation, it is written as 2.1000645 × 10^7. The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors. There are 10896768 positive integers (up to 21000645) that are relatively prime to 21000645.

Interesting facts

21000645 has 4 divisors, whose sum is 21014924
The reverse of 21000645 is 54600012
Previous prime number is 1665

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9

Name

Name	twenty-one million six hundred forty-five

Notation

Scientific notation	2.1000645 × 10^7
Engineering notation	2.1000645 × 10^6

Prime Factorization of 21000645

Prime Factorization 1665 × 12613

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21000645	Product of the distinct prime numbers

The prime factorization of 21000645 is 1665 × 12613. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 8, 29, 64, 155, 466, 593, 7469, 28417, 46597, 38144, 450883, 5147060, 7484253, 68975413, 27260022, 327114864, 870761684, 2066105764, 5464573645

Basic calculations (n = 21000645)

Multiplication

n×y

n×2	42001290
n×3	63001935
n×4	84002580
n×5	105003225

Division

n÷y

n÷2	10500322.5
n÷3	7000215
n÷3	5250161.25
n÷5	4200129

Exponentiation

n^y

n²	441027090416025
n³	9.2618533612098E+21
n⁴	1.9450489448082E+29
n⁵	4.0847282397543E+36

Nth Root

^y√n

²√n	4582.6460696851
³√n	275.89524222204
⁴√n	67.695244069913
⁵√n	29.13711356759

Divisors of 21000645

1, 1665, 12613, 21000645

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	-21000644	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 21000645 can be divided by 4 positive divisors. The sum of these divisors (counting 21000645) is 1, the average is 0.25.

Base conversion 21000645

Base	System	Value
2	Binary	1010000000111000111000101
3	Ternary	1110111221110200
4	Quaternary	1100013013011
5	Quinary	20334010040
6	Senary	2030041113
8	Octal	120070705
10	Decimal	21000645
12	Duodecimal	7049199
16	Hexadecimal	14071c5
20	Vigesimal	6b51c5
36	Base36	ci479

Cryptographic Hash Functions

md5	ff0676d9453ddfb95a5c62ed1e2639f8
sha1	9a83f860d7fa43d6ca12b6c520105cf64b1c2f15
sha256	399c75bc995e0f4cec9950256d7f6e3c31ccaa08b98151710a5337ad0ee2ca42
sha512	f52ecf022a66203d695bd7c1dd8254e826f25228836043ab3dac81f99073692704e35160fa29d6fd594b29a9832a50e2998aa4e392fbc739de02fc686b326cd1
ripemd-160	170154a380b5331c7f8107b3730925579ef5526c

21000645 as geometric shapes

Circle

Radius = n

Diameter	42001290
Circumference	131950944.10529
Area	1.3855274672851E+15

Sphere

Radius = n

Volume	3.8795960637604E+22
Surface area	5.5421098691403E+15
Circumference	131950944.10529

Square

Length = n

Perimeter	84002580
Area	441027090416025
Diagonal	29699396.977583

Cube

Length = n

Surface area	2646162542496150
Volume	9.2618533612098E+21
Space diagonal	36374184.131717

Equilateral Triangle

Length = n

Perimeter	63001935
Area	1.9097033202871E+14
Altitude	18187092.065859

Triangular Pyramid

Length = n

Surface area	1.9097033202871E+14
Volume	1.0915198863445E+21
Height	9899798.9925276