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

21827981 (number)

21827981 is an odd 8-digits composite number following 21827980 and preceding 21827982. In scientific notation, it is written as 2.1827981 × 10^7. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 18063360 positive integers (up to 21827981) that are relatively prime to 21827981.

Interesting facts

21827981 has 4 divisors, whose sum is 21844764
The reverse of 21827981 is 18972812
Previous prime number is 1421

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	twenty-one million eight hundred twenty-seven thousand nine hundred eighty-one

Notation

Scientific notation	2.1827981 × 10^7
Engineering notation	2.1827981 × 10^6

Prime Factorization of 21827981

Prime Factorization 1421 × 15361

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21827981	Product of the distinct prime numbers

The prime factorization of 21827981 is 1421 × 15361. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 2, 61, 10, 863, 929, 7681, 7284, 20220, 18070, 387594, 792356, 7246736, 2680255, 38583776, 38581345, 647684704, 900294715, 3268409013, 8867610321

Basic calculations (n = 21827981)

Multiplication

n×y

n×2	43655962
n×3	65483943
n×4	87311924
n×5	109139905

Division

n÷y

n÷2	10913990.5
n÷3	7275993.6666667
n÷3	5456995.25
n÷5	4365596.2

Exponentiation

n^y

n²	476460754536361
n³	1.0400176297265E+22
n⁴	2.2701485061336E+29
n⁵	4.9552758459062E+36

Nth Root

^y√n

²√n	4672.0424869643
³√n	279.47171221741
⁴√n	68.352340757024
⁵√n	29.363154714243

Divisors of 21827981

1, 1421, 15361, 21827981

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	-21827980	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 21827981 can be divided by 4 positive divisors. The sum of these divisors (counting 21827981) is 1, the average is 0.25.

Base conversion 21827981

Base	System	Value
2	Binary	1010011010001000110001101
3	Ternary	1112001222100202
4	Quaternary	1103101012031
5	Quinary	21041443411
6	Senary	2055503245
8	Octal	123210615
10	Decimal	21827981
12	Duodecimal	7387b25
16	Hexadecimal	14d118d
20	Vigesimal	6g89j1
36	Base36	czukt

Cryptographic Hash Functions

md5	90cabd2bb29f51d22decb939f0762cdb
sha1	2c42a1d9c79590bbadb50cbaaffea9d758c5fe25
sha256	3dab9ae52df9267ca6572ab2dbcffdaea914ddbbb85cc8c760b3902aec6235dc
sha512	2683533d1f84051ef3c29dcee723bdac05a5a51c36ea8c7ce580e94623d514e0607108b8e2c75e04fe51b64c7881e91a2846fcf718d0155574442d239735cf22
ripemd-160	994f37b3da26a4a18d6298c72db62700d8c11826

21827981 as geometric shapes

Circle

Radius = n

Diameter	43655962
Circumference	137149249.5046
Area	1.4968456061753E+15

Sphere

Radius = n

Volume	4.3564156602037E+22
Surface area	5.9873824247011E+15
Circumference	137149249.5046

Square

Length = n

Perimeter	87311924
Area	476460754536361
Diagonal	30869426.769422

Cube

Length = n

Surface area	2858764527218166
Volume	1.0400176297265E+22
Space diagonal	37807172.118648

Equilateral Triangle

Length = n

Perimeter	65483943
Area	2.063135586674E+14
Altitude	18903586.059324

Triangular Pyramid

Length = n

Surface area	2.063135586674E+14
Volume	1.2256725308887E+21
Height	10289808.923141