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

20990987 (number)

20990987 is an odd 8-digits composite number following 20990986 and preceding 20990988. In scientific notation, it is written as 2.0990987 × 10^7. The sum of its digits is 44. It has a total of 2 prime factors and 4 positive divisors. There are 20971776 positive integers (up to 20990987) that are relatively prime to 20990987.

Interesting facts

20990987 has 4 divisors, whose sum is 21010200
The reverse of 20990987 is 78909902
Previous prime number is 1163

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8

Name

Name	twenty million nine hundred ninety thousand nine hundred eighty-seven

Notation

Scientific notation	2.0990987 × 10^7
Engineering notation	2.0990987 × 10^6

Prime Factorization of 20990987

Prime Factorization 1163 × 18049

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20990987	Product of the distinct prime numbers

The prime factorization of 20990987 is 1163 × 18049. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 7, 97, 73, 759, 570, 290, 6932, 42932, 2388, 565576, 39756, 6912627, 8521833, 52845614, 30650820, 925665374, 645604588, 6678400655, 9603664102

Basic calculations (n = 20990987)

Multiplication

n×y

n×2	41981974
n×3	62972961
n×4	83963948
n×5	104954935

Division

n÷y

n÷2	10495493.5
n÷3	6996995.6666667
n÷3	5247746.75
n÷5	4198197.4

Exponentiation

n^y

n²	440621535234169
n³	9.2490809180205E+21
n⁴	1.9414733731212E+29
n⁵	4.0753442336032E+36

Nth Root

^y√n

²√n	4581.5921904945
³√n	275.85294185733
⁴√n	67.687459625063
⁵√n	29.134433097313

Divisors of 20990987

1, 1163, 18049, 20990987

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	-20990986	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 20990987 can be divided by 4 positive divisors. The sum of these divisors (counting 20990987) is 1, the average is 0.25.

Base conversion 20990987

Base	System	Value
2	Binary	1010000000100110000001011
3	Ternary	1110111110012222
4	Quaternary	1100010300023
5	Quinary	20333202422
6	Senary	2025524255
8	Octal	120046013
10	Decimal	20990987
12	Duodecimal	704368b
16	Hexadecimal	1404c0b
20	Vigesimal	6b3h97
36	Base36	chwqz

Cryptographic Hash Functions

md5	955af10392a1272f91e9067c7821d2a3
sha1	cbad4a6194b7c98722861d5485424dbba5ce1494
sha256	0ca92024bbfc8dee5da73aff4c9b5a7cbcfb7bebc7a581e32e7b1db373e75720
sha512	2cd07dd4f81eff369cdb75528c94d86e620c1434fd40f05945fab37a39d71763b89a095a873ea382ca451f584da3509fabb733cc83d144542b1669f8711fa9d7
ripemd-160	d596e1921138489d023e43b9a0f5ccd4e3fd0700

20990987 as geometric shapes

Circle

Radius = n

Diameter	41981974
Circumference	131890261.1016
Area	1.3842533781051E+15

Sphere

Radius = n

Volume	3.8742459552681E+22
Surface area	5.5370135124205E+15
Circumference	131890261.1016

Square

Length = n

Perimeter	83963948
Area	440621535234169
Diagonal	29685738.502997

Cube

Length = n

Surface area	2643729211405014
Volume	9.2490809180205E+21
Space diagonal	36357455.985018

Equilateral Triangle

Length = n

Perimeter	62972961
Area	1.9079472148365E+14
Altitude	18178727.992509

Triangular Pyramid

Length = n

Surface area	1.9079472148365E+14
Volume	1.0900146394792E+21
Height	9895246.1676658