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

21086821 (number)

21086821 is an odd 8-digits composite number following 21086820 and preceding 21086822. In scientific notation, it is written as 2.1086821 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 17962560 positive integers (up to 21086821) that are relatively prime to 21086821.

Interesting facts

21086821 has 4 divisors, whose sum is 21106444
The reverse of 21086821 is 12868012
Previous prime number is 1141

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty-one million eighty-six thousand eight hundred twenty-one

Notation

Scientific notation	2.1086821 × 10^7
Engineering notation	2.1086821 × 10^6

Prime Factorization of 21086821

Prime Factorization 1141 × 18481

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21086821	Product of the distinct prime numbers

The prime factorization of 21086821 is 1141 × 18481. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 4, 59, 76, 726, 73, 7125, 6607, 37023, 98731, 406188, 700633, 3641518, 4995585, 76628947, 25778161, 29150869, 922717639, 9280231020, 3095006663

Basic calculations (n = 21086821)

Multiplication

n×y

n×2	42173642
n×3	63260463
n×4	84347284
n×5	105434105

Division

n÷y

n÷2	10543410.5
n÷3	7028940.3333333
n÷3	5271705.25
n÷5	4217364.2

Exponentiation

n^y

n²	444654019886041
n³	9.3763397242674E+21
n⁴	1.9771719740082E+29
n⁵	4.1692271502127E+36

Nth Root

^y√n

²√n	4592.0388717867
³√n	276.27210527232
⁴√n	67.76458419991
⁵√n	29.160987201949

Divisors of 21086821

1, 1141, 18481, 21086821

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	-21086820	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 21086821 can be divided by 4 positive divisors. The sum of these divisors (counting 21086821) is 1, the average is 0.25.

Base conversion 21086821

Base	System	Value
2	Binary	1010000011100001001100101
3	Ternary	1110200022200101
4	Quaternary	1100130021211
5	Quinary	20344234241
6	Senary	2031544101
8	Octal	120341145
10	Decimal	21086821
12	Duodecimal	708b031
16	Hexadecimal	141c265
20	Vigesimal	6bfh11
36	Base36	cjyp1

Cryptographic Hash Functions

md5	2a50d9c1cd575e39b01289ed527df76f
sha1	998a3241d4179c736808bcfc975c209fc9383a2c
sha256	33ade4e8f57352d74c64a55f221647373f052ef2337bddd403c16aef4468f076
sha512	2c4988d769e80753b559600a713bc5c69ecac1a51e04ba601cf3d461fe5a0883fb4865adf9f2485737a8338d116d0ef6736a6fdb7de3e38c6183515bece19ec9
ripemd-160	565c119c4d03650a8cf2942d40e6e18e3d495aeb

21086821 as geometric shapes

Circle

Radius = n

Diameter	42173642
Circumference	132492403.88233
Area	1.3969218022632E+15

Sphere

Radius = n

Volume	3.9275519993761E+22
Surface area	5.5876872090526E+15
Circumference	132492403.88233

Square

Length = n

Perimeter	84347284
Area	444654019886041
Diagonal	29821268.245534

Cube

Length = n

Surface area	2667924119316246
Volume	9.3763397242674E+21
Space diagonal	36523445.34211

Equilateral Triangle

Length = n

Perimeter	63260463
Area	1.9254083855809E+14
Altitude	18261722.671055

Triangular Pyramid

Length = n

Surface area	1.9254083855809E+14
Volume	1.105012233623E+21
Height	9940422.7485113