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

21490781 (number)

21490781 is an odd 8-digits composite number following 21490780 and preceding 21490782. In scientific notation, it is written as 2.1490781 × 10^7. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 19197360 positive integers (up to 21490781) that are relatively prime to 21490781.

Interesting facts

21490781 has 8 divisors, whose sum is 23890944
The reverse of 21490781 is 18709412
Previous prime number is 31

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 thousand seven hundred eighty-one

Notation

Scientific notation	2.1490781 × 10^7
Engineering notation	2.1490781 × 10^6

Prime Factorization of 21490781

Prime Factorization 13 × 31 × 53327

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21490781	Product of the distinct prime numbers

The prime factorization of 21490781 is 13 × 31 × 53327. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 9, 28, 7, 555, 963, 1093, 886, 12972, 75731, 140227, 429472, 7115247, 1031104, 44612714, 35795271, 812500707, 627228544, 8122039822, 2357885827

Basic calculations (n = 21490781)

Multiplication

n×y

n×2	42981562
n×3	64472343
n×4	85963124
n×5	107453905

Division

n÷y

n÷2	10745390.5
n÷3	7163593.6666667
n÷3	5372695.25
n÷5	4298156.2

Exponentiation

n^y

n²	461853667989961
n³	9.925596032819E+21
n⁴	2.1330881063578E+29
n⁵	4.584172934744E+36

Nth Root

^y√n

²√n	4635.8150308225
³√n	278.02513876495
⁴√n	68.086819802532
⁵√n	29.271868111547

Divisors of 21490781

1, 13, 31, 403, 53327, 693251, 1653137, 21490781

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	-21490780	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 21490781 can be divided by 8 positive divisors. The sum of these divisors (counting 21490781) is 1, the average is 0.125.

Base conversion 21490781

Base	System	Value
2	Binary	1010001111110110001011101
3	Ternary	1111102211210212
4	Quaternary	1101332301131
5	Quinary	21000201111
6	Senary	2044342205
8	Octal	121766135
10	Decimal	21490781
12	Duodecimal	7244965
16	Hexadecimal	147ec5d
20	Vigesimal	6e66j1
36	Base36	csme5

Cryptographic Hash Functions

md5	c1cb24016b8f13dadf621ad663e67c62
sha1	8ccfb99f47ac859f6587ea25aea971ff9535bbd1
sha256	fbad00deb3178ad280dd4936cdc6b797ea6f4b7925d6e1efb0c2c29386fbce9f
sha512	9ec604a3e3c0d7f22c7ac9a9980ad9a9825bd8621c152b02c47e479fae33b9c51da4d1165ed9e896d86d2d0688e978e320a05c120c7914a99be36772bcd11eef
ripemd-160	472133daf44068930d796e1b4fa0d8aa07570cec

21490781 as geometric shapes

Circle

Radius = n

Diameter	42981562
Circumference	135030559.41901
Area	1.4509560903908E+15

Sphere

Radius = n

Volume	4.1576239438939E+22
Surface area	5.803824361563E+15
Circumference	135030559.41901

Square

Length = n

Perimeter	85963124
Area	461853667989961
Diagonal	30392553.95619

Cube

Length = n

Surface area	2771122007939766
Volume	9.925596032819E+21
Space diagonal	37223124.586336

Equilateral Triangle

Length = n

Perimeter	64472343
Area	1.9998850465516E+14
Altitude	18611562.293168

Triangular Pyramid

Length = n

Surface area	1.9998850465516E+14
Volume	1.1697427103541E+21
Height	10130851.31873