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

21491681 (number)

21491681 is an odd 8-digits composite number following 21491680 and preceding 21491682. In scientific notation, it is written as 2.1491681 × 10^7. The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors. There are 21448452 positive integers (up to 21491681) that are relatively prime to 21491681.

Interesting facts

21491681 has 4 divisors, whose sum is 21534912
The reverse of 21491681 is 18619412
Previous prime number is 503

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5

Name

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

Notation

Scientific notation	2.1491681 × 10^7
Engineering notation	2.1491681 × 10^6

Prime Factorization of 21491681

Prime Factorization 503 × 42727

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21491681	Product of the distinct prime numbers

The prime factorization of 21491681 is 503 × 42727. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 5, 23, 40, 296, 554, 7045, 4882, 29400, 90540, 215517, 750702, 5778107, 2726685, 32781075, 89606042, 473826717, 323549254, 415215029, 6176690164

Basic calculations (n = 21491681)

Multiplication

n×y

n×2	42983362
n×3	64475043
n×4	85966724
n×5	107458405

Division

n÷y

n÷2	10745840.5
n÷3	7163893.6666667
n÷3	5372920.25
n÷5	4298336.2

Exponentiation

n^y

n²	461892352205761
n³	9.9268430899459E+21
n⁴	2.1334454502617E+29
n⁵	4.5851329047926E+36

Nth Root

^y√n

²√n	4635.9121001158
³√n	278.02901979549
⁴√n	68.087532633484
⁵√n	29.27211327937

Divisors of 21491681

1, 503, 42727, 21491681

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	-21491680	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 21491681 can be divided by 4 positive divisors. The sum of these divisors (counting 21491681) is 1, the average is 0.25.

Base conversion 21491681

Base	System	Value
2	Binary	1010001111110111111100001
3	Ternary	1111102220001012
4	Quaternary	1101332333201
5	Quinary	21000213211
6	Senary	2044350305
8	Octal	121767741
10	Decimal	21491681
12	Duodecimal	7245395
16	Hexadecimal	147efe1
20	Vigesimal	6e6941
36	Base36	csn35

Cryptographic Hash Functions

md5	ed9253cfc74e8f2c9872b7996d62f609
sha1	840d3540e676880b11711b037eb94830067ba9f4
sha256	60bd6e6f7759c635b528c6db5a8d1046e448fefb90cd6e45b4a3ef6629619970
sha512	84d85fe17395afce5b47bd1a2b2699858ae1f0d95a18ee59454e42d94c068164987a9b6d0900511c656ead96e89294e67722d610c079bc1163bdd32104c3e4ec
ripemd-160	2573dee9da26209c54a1d50f972f875ae74aa5f4

21491681 as geometric shapes

Circle

Radius = n

Diameter	42983362
Circumference	135036214.28579
Area	1.4510776204389E+15

Sphere

Radius = n

Volume	4.1581463099617E+22
Surface area	5.8043104817557E+15
Circumference	135036214.28579

Square

Length = n

Perimeter	85966724
Area	461892352205761
Diagonal	30393826.748396

Cube

Length = n

Surface area	2771354113234566
Volume	9.9268430899459E+21
Space diagonal	37224683.432063

Equilateral Triangle

Length = n

Perimeter	64475043
Area	2.0000525541197E+14
Altitude	18612341.716031

Triangular Pyramid

Length = n

Surface area	2.0000525541197E+14
Volume	1.1698896774459E+21
Height	10131275.582799