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

21000891 (number)

21000891 is an odd 8-digits composite number following 21000890 and preceding 21000892. In scientific notation, it is written as 2.1000891 × 10^7. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 14000592 positive integers (up to 21000891) that are relatively prime to 21000891.

Interesting facts

21000891 has 4 divisors, whose sum is 28001192
The reverse of 21000891 is 19800012
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3

Name

Name	twenty-one million eight hundred ninety-one

Notation

Scientific notation	2.1000891 × 10^7
Engineering notation	2.1000891 × 10^6

Prime Factorization of 21000891

Prime Factorization 3 × 7000297

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21000891	Product of the distinct prime numbers

The prime factorization of 21000891 is 3 × 7000297. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 4, 4, 95, 707, 643, 2649, 5343, 27940, 31252, 279571, 739060, 314630, 8805839, 61585644, 5743489, 673797648, 64515430, 2145988895, 2700308342

Basic calculations (n = 21000891)

Multiplication

n×y

n×2	42001782
n×3	63002673
n×4	84003564
n×5	105004455

Division

n÷y

n÷2	10500445.5
n÷3	7000297
n÷3	5250222.75
n÷5	4200178.2

Exponentiation

n^y

n²	441037422793881
n³	9.2621788430152E+21
n⁴	1.9451400830467E+29
n⁵	4.0849674863794E+36

Nth Root

^y√n

²√n	4582.6729099948
³√n	275.89631948998
⁴√n	67.695442313311
⁵√n	29.137181829268

Divisors of 21000891

1, 3, 7000297, 21000891

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	-21000890	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 21000891 can be divided by 4 positive divisors. The sum of these divisors (counting 21000891) is 1, the average is 0.25.

Base conversion 21000891

Base	System	Value
2	Binary	1010000000111001010111011
3	Ternary	1110111221210210
4	Quaternary	1100013022323
5	Quinary	20334012031
6	Senary	2030042203
8	Octal	120071273
10	Decimal	21000891
12	Duodecimal	7049363
16	Hexadecimal	14072bb
20	Vigesimal	6b524b
36	Base36	ci4e3

Cryptographic Hash Functions

md5	c484b08fafb7081790f0e521a89b3385
sha1	6fcd07d1b31e90f2cfd783f73587b43a5a94a2fe
sha256	812d370103549cccfcb83e6d526a78721d826ee66d3985600b235e8752481aa6
sha512	a651193330243c634cecbd8029ad10aa2e802c190262663b2577c08481106526f8825b68dc5233d25f185b41829e8782348e12d2d5820af61f49d31f644316e2
ripemd-160	dcb1d07469896bda977d7c71ee482efc3bcb032f

21000891 as geometric shapes

Circle

Radius = n

Diameter	42001782
Circumference	131952489.76888
Area	1.3855599274074E+15

Sphere

Radius = n

Volume	3.8797324012602E+22
Surface area	5.5422397096297E+15
Circumference	131952489.76888

Square

Length = n

Perimeter	84003564
Area	441037422793881
Diagonal	29699744.874119

Cube

Length = n

Surface area	2646224536763286
Volume	9.2621788430152E+21
Space diagonal	36374610.216216

Equilateral Triangle

Length = n

Perimeter	63002673
Area	1.9097480607956E+14
Altitude	18187305.108108

Triangular Pyramid

Length = n

Surface area	1.9097480607956E+14
Volume	1.0915582447431E+21
Height	9899914.9580397