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

21081387 (number)

21081387 is an odd 8-digits composite number following 21081386 and preceding 21081388. In scientific notation, it is written as 2.1081387 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 13876200 positive integers (up to 21081387) that are relatively prime to 21081387.

Interesting facts

21081387 has 8 divisors, whose sum is 28464640
The reverse of 21081387 is 78318012
Previous prime number is 79

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	twenty-one million eighty-one thousand three hundred eighty-seven

Notation

Scientific notation	2.1081387 × 10^7
Engineering notation	2.1081387 × 10^6

Prime Factorization of 21081387

Prime Factorization 3 × 79 × 88951

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21081387	Product of the distinct prime numbers

The prime factorization of 21081387 is 3 × 79 × 88951. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 1, 25, 21, 863, 916, 5385, 4740, 54498, 45597, 167745, 457320, 6275816, 9769645, 13361452, 66654596, 670838577, 790334602, 9328478189, 2246553977

Basic calculations (n = 21081387)

Multiplication

n×y

n×2	42162774
n×3	63244161
n×4	84325548
n×5	105406935

Division

n÷y

n÷2	10540693.5
n÷3	7027129
n÷3	5270346.75
n÷5	4216277.4

Exponentiation

n^y

n²	444424877843769
n³	9.3690928422522E+21
n⁴	1.9751347204645E+29
n⁵	4.1638579419249E+36

Nth Root

^y√n

²√n	4591.4471574875
³√n	276.24837178186
⁴√n	67.760218103896
⁵√n	29.159484110128

Divisors of 21081387

1, 3, 79, 237, 88951, 266853, 7027129, 21081387

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	-21081386	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 21081387 can be divided by 8 positive divisors. The sum of these divisors (counting 21081387) is 1, the average is 0.125.

Base conversion 21081387

Base	System	Value
2	Binary	1010000011010110100101011
3	Ternary	1110200001020010
4	Quaternary	1100122310223
5	Quinary	20344101022
6	Senary	2031503003
8	Octal	120326453
10	Decimal	21081387
12	Duodecimal	7087a63
16	Hexadecimal	141ad2b
20	Vigesimal	6bf397
36	Base36	cjui3

Cryptographic Hash Functions

md5	3fb512e7097556d43e3e8b1bb075475b
sha1	71a860f92e6355972531945c2fad5c09b0825e76
sha256	7ccecaba49aadae7a4e1ebee85419aa5d894d429b6d593b5273749ee73d2fee4
sha512	8389a527966d6071bd048fe3f8ee19bd0cd88720d745c816b413a7080626d42b2978cf40335510495d2128346295da9609669ec0ae72ebbcc3903e70c6b4e439
ripemd-160	24a49af845c86ec04630916ed0535926b546adb3

21081387 as geometric shapes

Circle

Radius = n

Diameter	42162774
Circumference	132458261.05337
Area	1.3962019313065E+15

Sphere

Radius = n

Volume	3.924516432536E+22
Surface area	5.5848077252261E+15
Circumference	132458261.05337

Square

Length = n

Perimeter	84325548
Area	444424877843769
Diagonal	29813583.409036

Cube

Length = n

Surface area	2666549267062614
Volume	9.3690928422522E+21
Space diagonal	36514033.378022

Equilateral Triangle

Length = n

Perimeter	63244161
Area	1.9244161714325E+14
Altitude	18257016.689011

Triangular Pyramid

Length = n

Surface area	1.9244161714325E+14
Volume	1.1041581803871E+21
Height	9937861.1363453