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

21287961 (number)

21287961 is an odd 8-digits composite number following 21287960 and preceding 21287962. In scientific notation, it is written as 2.1287961 × 10^7. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 12648960 positive integers (up to 21287961) that are relatively prime to 21287961.

Interesting facts

21287961 has 8 divisors, whose sum is 22593384
The reverse of 21287961 is 16978212
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9

Name

Name	twenty-one million two hundred eighty-seven thousand nine hundred sixty-one

Notation

Scientific notation	2.1287961 × 10^7
Engineering notation	2.1287961 × 10^6

Prime Factorization of 21287961

Prime Factorization 513 × 17 × 2441

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21287961	Product of the distinct prime numbers

The prime factorization of 21287961 is 513 × 17 × 2441. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 7, 69, 77, 18, 55, 5811, 8170, 3609, 91703, 962791, 574890, 9267421, 240726, 95255222, 19458366, 900871163, 399845012, 8518225893, 8040063485

Basic calculations (n = 21287961)

Multiplication

n×y

n×2	42575922
n×3	63863883
n×4	85151844
n×5	106439805

Division

n÷y

n÷2	10643980.5
n÷3	7095987
n÷3	5321990.25
n÷5	4257592.2

Exponentiation

n^y

n²	453177283537521
n³	9.6472203380327E+21
n⁴	2.0536965031445E+29
n⁵	4.3719011064776E+36

Nth Root

^y√n

²√n	4613.8878399892
³√n	277.14774881416
⁴√n	67.925605186772
⁵√n	29.216407493336

Divisors of 21287961

1, 17, 513, 2441, 8721, 41497, 1252233, 21287961

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21287960	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21287961 can be divided by 8 positive divisors. The sum of these divisors (counting 21287961) is 1, the average is 0.125.

Base conversion 21287961

Base	System	Value
2	Binary	1010001001101010000011001
3	Ternary	1111001112121000
4	Quaternary	1101031100121
5	Quinary	20422203321
6	Senary	2040135213
8	Octal	121152031
10	Decimal	21287961
12	Duodecimal	7167509
16	Hexadecimal	144d419
20	Vigesimal	6d0ji1
36	Base36	co9w9

Cryptographic Hash Functions

md5	ab86d200e55ab4b1fd2368a07488b2aa
sha1	5f9ac704ea5ec9a48710ac2a45bcde5d08b4cd08
sha256	ade9cafedce2d04142782493699bb93a6572cc4bbeb5d35c1c5b230837005add
sha512	e797585231acad4cb521f0da091d4fa46830837b13b9a968224cc1881c9b2e68c45b5f97c40c4a2752b2acc59daafd06381e5ce49095551af3a94e7144a2ff8b
ripemd-160	5369324f3e5a4dac68cffdb57ea4e7fc70d1ca0f

21287961 as geometric shapes

Circle

Radius = n

Diameter	42575922
Circumference	133756203.77501
Area	1.4236984247353E+15

Sphere

Radius = n

Volume	4.0410182055367E+22
Surface area	5.694793698941E+15
Circumference	133756203.77501

Square

Length = n

Perimeter	85151844
Area	453177283537521
Diagonal	30105723.16147

Cube

Length = n

Surface area	2719063701225126
Volume	9.6472203380327E+21
Space diagonal	36871830.041545

Equilateral Triangle

Length = n

Perimeter	63863883
Area	1.9623151998076E+14
Altitude	18435915.020772

Triangular Pyramid

Length = n

Surface area	1.9623151998076E+14
Volume	1.1369358201039E+21
Height	10035241.053823