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

20783981 (number)

20783981 is an odd 8-digits composite number following 20783980 and preceding 20783982. In scientific notation, it is written as 2.0783981 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 19051200 positive integers (up to 20783981) that are relatively prime to 20783981.

Interesting facts

20783981 has 16 divisors, whose sum is 22617600
The reverse of 20783981 is 18938702
Previous prime number is 29

Basic properties

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

Name

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

Notation

Scientific notation	2.0783981 × 10^7
Engineering notation	2.0783981 × 10^6

Prime Factorization of 20783981

Prime Factorization 61 × 31 × 29 × 379

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	20783981	Product of the distinct prime numbers

The prime factorization of 20783981 is 61 × 31 × 29 × 379. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 9, 75, 44, 313, 81, 3685, 8453, 97268, 94011, 217084, 661042, 2750740, 2521829, 18899012, 39987084, 983708586, 27137002, 4406989316, 8133737336

Basic calculations (n = 20783981)

Multiplication

n×y

n×2	41567962
n×3	62351943
n×4	83135924
n×5	103919905

Division

n÷y

n÷2	10391990.5
n÷3	6927993.6666667
n÷3	5195995.25
n÷5	4156796.2

Exponentiation

n^y

n²	431973866208361
n³	8.9781366277711E+21
n⁴	1.86601421087E+29
n⁵	3.8783203904452E+36

Nth Root

^y√n

²√n	4558.9451630832
³√n	274.94315519266
⁴√n	67.519961219503
⁵√n	29.076742294258

Divisors of 20783981

1, 29, 31, 61, 379, 899, 1769, 1891, 10991, 11749, 23119, 54839, 340721, 670451, 716689, 20783981

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20783980	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20783981 can be divided by 16 positive divisors. The sum of these divisors (counting 20783981) is 1, the average is 0.0625.

Base conversion 20783981

Base	System	Value
2	Binary	1001111010010001101101101
3	Ternary	1110002221021002
4	Quaternary	1033102031231
5	Quinary	20310041411
6	Senary	2021250045
8	Octal	117221555
10	Decimal	20783981
12	Duodecimal	6b63925
16	Hexadecimal	13d236d
20	Vigesimal	69hjj1
36	Base36	cdh0t

Cryptographic Hash Functions

md5	6ea6496a4fac66babe482350434d13fa
sha1	87ff262cb81a00f8d4ed47825b1a922b9e32a3ef
sha256	999583c5c0710289b3d433067f829f4707df3cef622dffdce3049311fa70b3f8
sha512	3742cd785f3d9e7444d21199bbd9dbd4c3fd40d6bf02885b4f5637b4ac106618907958655e5415cf4ba68730eb27c0534bce0e51991615ab74327fe7ed3d658e
ripemd-160	9032526c74d7781728664411e4b09e8ddb873c0d

20783981 as geometric shapes

Circle

Radius = n

Diameter	41567962
Circumference	130589604.0439
Area	1.357085924623E+15

Sphere

Radius = n

Volume	3.7607530763642E+22
Surface area	5.4283436984919E+15
Circumference	130589604.0439

Square

Length = n

Perimeter	83135924
Area	431973866208361
Diagonal	29392987.810305

Cube

Length = n

Surface area	2591843197250166
Volume	8.9781366277711E+21
Space diagonal	35998911.075546

Equilateral Triangle

Length = n

Perimeter	62351943
Area	1.8705017095371E+14
Altitude	17999455.537773

Triangular Pyramid

Length = n

Surface area	1.8705017095371E+14
Volume	1.0580835486527E+21
Height	9797662.6034349