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

21490981 (number)

21490981 is an odd 8-digits composite number following 21490980 and preceding 21490982. In scientific notation, it is written as 2.1490981 × 10^7. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 21196512 positive integers (up to 21490981) that are relatively prime to 21490981.

Interesting facts

21490981 has 4 divisors, whose sum is 21785452
The reverse of 21490981 is 18909412
Previous prime number is 73

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7

Name

Name	twenty-one million four hundred ninety thousand nine hundred eighty-one

Notation

Scientific notation	2.1490981 × 10^7
Engineering notation	2.1490981 × 10^6

Prime Factorization of 21490981

Prime Factorization 73 × 294397

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21490981	Product of the distinct prime numbers

The prime factorization of 21490981 is 73 × 294397. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 9, 37, 15, 860, 252, 6930, 1933, 40071, 45314, 108523, 927715, 8164747, 637602, 71831689, 68239290, 462903907, 498359544, 7226232311, 5504349737

Basic calculations (n = 21490981)

Multiplication

n×y

n×2	42981962
n×3	64472943
n×4	85963924
n×5	107454905

Division

n÷y

n÷2	10745490.5
n÷3	7163660.3333333
n÷3	5372745.25
n÷5	4298196.2

Exponentiation

n^y

n²	461862264342361
n³	9.9258731475987E+21
n⁴	2.1331675122345E+29
n⁵	4.584386247525E+36

Nth Root

^y√n

²√n	4635.8366019522
³√n	278.02600122555
⁴√n	68.086978211345
⁵√n	29.271922593995

Divisors of 21490981

1, 73, 294397, 21490981

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	-21490980	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 21490981 can be divided by 4 positive divisors. The sum of these divisors (counting 21490981) is 1, the average is 0.25.

Base conversion 21490981

Base	System	Value
2	Binary	1010001111110110100100101
3	Ternary	1111102212002021
4	Quaternary	1101332310211
5	Quinary	21000202411
6	Senary	2044343141
8	Octal	121766445
10	Decimal	21490981
12	Duodecimal	7244ab1
16	Hexadecimal	147ed25
20	Vigesimal	6e6791
36	Base36	csmjp

Cryptographic Hash Functions

md5	e4f7014ecbfadfad9165f5d2803fc99b
sha1	eb6890bd5e8e14f70d74dd8c8381fe28cd6c72d5
sha256	3e501326d939df3f37d7d631a3ff81bdb7e7dd4059c64c2d1e14fa7869e30f92
sha512	b3fb5652bb7246f7d174813215942038b40be2d64d053487543e96fc2e7762e680b0aa20aff25aa49ed532d48d95022cbf029bb79ba682412a9a3105a81ba3f6
ripemd-160	2ddc05415199463000744f4a90e900269a1edfa7

21490981 as geometric shapes

Circle

Radius = n

Diameter	42981962
Circumference	135031816.05608
Area	1.4509830966283E+15

Sphere

Radius = n

Volume	4.1577400214614E+22
Surface area	5.8039323865132E+15
Circumference	135031816.05608

Square

Length = n

Perimeter	85963924
Area	461862264342361
Diagonal	30392836.798903

Cube

Length = n

Surface area	2771173586054166
Volume	9.9258731475987E+21
Space diagonal	37223470.996497

Equilateral Triangle

Length = n

Perimeter	64472943
Area	1.9999222698494E+14
Altitude	18611735.498249

Triangular Pyramid

Length = n

Surface area	1.9999222698494E+14
Volume	1.1697753686441E+21
Height	10130945.599634