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

21492987 (number)

21492987 is an odd 8-digits composite number following 21492986 and preceding 21492988. In scientific notation, it is written as 2.1492987 × 10^7. The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors. There are 14328656 positive integers (up to 21492987) that are relatively prime to 21492987.

Interesting facts

21492987 has 4 divisors, whose sum is 28657320
The reverse of 21492987 is 78929412
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6

Name

Name	twenty-one million four hundred ninety-two thousand nine hundred eighty-seven

Notation

Scientific notation	2.1492987 × 10^7
Engineering notation	2.1492987 × 10^6

Prime Factorization of 21492987

Prime Factorization 3 × 7164329

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21492987	Product of the distinct prime numbers

The prime factorization of 21492987 is 3 × 7164329. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 4, 80, 52, 997, 22, 5581, 3652, 61883, 48494, 813019, 103570, 449112, 6366779, 87709564, 78552096, 310512541, 666521141, 581748174, 6856840813

Basic calculations (n = 21492987)

Multiplication

n×y

n×2	42985974
n×3	64478961
n×4	85971948
n×5	107464935

Division

n÷y

n÷2	10746493.5
n÷3	7164329
n÷3	5373246.75
n÷5	4298597.4

Exponentiation

n^y

n²	461948490182169
n³	9.928652894155E+21
n⁴	2.1339640758159E+29
n⁵	4.5865262139977E+36

Nth Root

^y√n

²√n	4636.0529548313
³√n	278.03465140934
⁴√n	68.088566990584
⁵√n	29.272469030516

Divisors of 21492987

1, 3, 7164329, 21492987

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	-21492986	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 21492987 can be divided by 4 positive divisors. The sum of these divisors (counting 21492987) is 1, the average is 0.25.

Base conversion 21492987

Base	System	Value
2	Binary	1010001111111010011111011
3	Ternary	1111102221211120
4	Quaternary	1101333103323
5	Quinary	21000233422
6	Senary	2044400323
8	Octal	121772373
10	Decimal	21492987
12	Duodecimal	72460a3
16	Hexadecimal	147f4fb
20	Vigesimal	6e6c97
36	Base36	cso3f

Cryptographic Hash Functions

md5	435e1132ab03251dbeba44ae804ece80
sha1	dfc7b025813b51abfb95583b5ca5fb3be65b875c
sha256	41a33f94920600767a602b138d91768c4d8c156cee7295fc0ce184a63a3c59c4
sha512	aac67b963e8f2f1a02de9b772b728d007df4a7ad4a41fabb6a8272de2611bf4098264d44e8a12a3c5ba9dd979f1fd53637c4bc1f975719938a559d817ce864a6
ripemd-160	11ce22fc2e6e0fb499bafb66a8b5ad77beca8d0e

21492987 as geometric shapes

Circle

Radius = n

Diameter	42985974
Circumference	135044420.1258
Area	1.4512539830932E+15

Sphere

Radius = n

Volume	4.158904398976E+22
Surface area	5.8050159323728E+15
Circumference	135044420.1258

Square

Length = n

Perimeter	85971948
Area	461948490182169
Diagonal	30395673.711309

Cube

Length = n

Surface area	2771690941093014
Volume	9.928652894155E+21
Space diagonal	37226945.490417

Equilateral Triangle

Length = n

Perimeter	64478961
Area	2.0002956386881E+14
Altitude	18613472.745209

Triangular Pyramid

Length = n

Surface area	2.0002956386881E+14
Volume	1.1701029649174E+21
Height	10131891.237103