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

21000491 (number)

21000491 is an odd 8-digits composite number following 21000490 and preceding 21000492. In scientific notation, it is written as 2.1000491 × 10^7. The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors. There are 18465408 positive integers (up to 21000491) that are relatively prime to 21000491.

Interesting facts

21000491 has 8 divisors, whose sum is 22149120
The reverse of 21000491 is 19400012
Previous prime number is 1343

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 17
Digital Root 8

Name

Name	twenty-one million four hundred ninety-one

Notation

Scientific notation	2.1000491 × 10^7
Engineering notation	2.1000491 × 10^6

Prime Factorization of 21000491

Prime Factorization 19 × 1343 × 823

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21000491	Product of the distinct prime numbers

The prime factorization of 21000491 is 19 × 1343 × 823. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 5, 16, 60, 352, 633, 6089, 1446, 68446, 89450, 300264, 227373, 6283204, 8314272, 8412306, 54618431, 427107910, 973049618, 2089024257, 5236276571

Basic calculations (n = 21000491)

Multiplication

n×y

n×2	42000982
n×3	63001473
n×4	84001964
n×5	105002455

Division

n÷y

n÷2	10500245.5
n÷3	7000163.6666667
n÷3	5250122.75
n÷5	4200098.2

Exponentiation

n^y

n²	441020622241081
n³	9.2616496081882E+21
n⁴	1.9449918924191E+29
n⁵	4.084578473182E+36

Nth Root

^y√n

²√n	4582.6292671348
³√n	275.89456783051
⁴√n	67.695119965436
⁵√n	29.137070834344

Divisors of 21000491

1, 19, 823, 1343, 15637, 25517, 1105289, 21000491

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	-21000490	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 21000491 can be divided by 8 positive divisors. The sum of these divisors (counting 21000491) is 1, the average is 0.125.

Base conversion 21000491

Base	System	Value
2	Binary	1010000000111000100101011
3	Ternary	1110111221020222
4	Quaternary	1100013010223
5	Quinary	20334003431
6	Senary	2030040255
8	Octal	120070453
10	Decimal	21000491
12	Duodecimal	704908b
16	Hexadecimal	140712b
20	Vigesimal	6b514b
36	Base36	ci42z

Cryptographic Hash Functions

md5	a654429a1482491a11e065c29256d6f9
sha1	b685f457341ff5a73180e7bc4870d1f1ef20e2ac
sha256	047d61c98002f17b2932b725435628de84b0cf157ccd2ab3d62963a77c2082b7
sha512	97cfa5b58b758f6f78cbe8055c36f951fde6b6893e6dcd1922b7c311d0a84c50e400b749bc3840e0e2f7276016d05ef05bab2ef4884e1cc862de17896cbafdd5
ripemd-160	83ca5b1c0b187929e28ce54637d336c6483fd6bc

21000491 as geometric shapes

Circle

Radius = n

Diameter	42000982
Circumference	131949976.49476
Area	1.3855071469142E+15

Sphere

Radius = n

Volume	3.8795107158943E+22
Surface area	5.5420285876567E+15
Circumference	131949976.49476

Square

Length = n

Perimeter	84001964
Area	441020622241081
Diagonal	29699179.188694

Cube

Length = n

Surface area	2646123733446486
Volume	9.2616496081882E+21
Space diagonal	36373917.395893

Equilateral Triangle

Length = n

Perimeter	63001473
Area	1.909675312268E+14
Altitude	18186958.697946

Triangular Pyramid

Length = n

Surface area	1.909675312268E+14
Volume	1.0914958738206E+21
Height	9899726.3962314