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

21087921 (number)

21087921 is an odd 8-digits composite number following 21087920 and preceding 21087922. In scientific notation, it is written as 2.1087921 × 10^7. The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors. There are 14058612 positive integers (up to 21087921) that are relatively prime to 21087921.

Interesting facts

21087921 has 4 divisors, whose sum is 28117232
The reverse of 21087921 is 12978012
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

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

Notation

Scientific notation	2.1087921 × 10^7
Engineering notation	2.1087921 × 10^6

Prime Factorization of 21087921

Prime Factorization 3 × 7029307

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21087921	Product of the distinct prime numbers

The prime factorization of 21087921 is 3 × 7029307. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 9, 75, 70, 272, 501, 615, 9392, 38947, 70681, 788307, 374084, 7353763, 3085319, 25017915, 50359141, 352091012, 854134227, 9428433552, 613881179

Basic calculations (n = 21087921)

Multiplication

n×y

n×2	42175842
n×3	63263763
n×4	84351684
n×5	105439605

Division

n÷y

n÷2	10543960.5
n÷3	7029307
n÷3	5271980.25
n÷5	4217584.2

Exponentiation

n^y

n²	444700412102241
n³	9.3778071590795E+21
n⁴	1.977584565239E+29
n⁵	4.170314708258E+36

Nth Root

^y√n

²√n	4592.15864273
³√n	276.27690912638
⁴√n	67.765467922313
⁵√n	29.161291433835

Divisors of 21087921

1, 3, 7029307, 21087921

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	-21087920	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 21087921 can be divided by 4 positive divisors. The sum of these divisors (counting 21087921) is 1, the average is 0.25.

Base conversion 21087921

Base	System	Value
2	Binary	1010000011100011010110001
3	Ternary	1110200101012010
4	Quaternary	1100130122301
5	Quinary	20344303141
6	Senary	2031553133
8	Octal	120343261
10	Decimal	21087921
12	Duodecimal	708b7a9
16	Hexadecimal	141c6b1
20	Vigesimal	6bfjg1
36	Base36	cjzjl

Cryptographic Hash Functions

md5	11f38abb326c4ffe572b044f08291165
sha1	9c6317cff20e4f8eebc71b4edeba9c129a009150
sha256	39853629c32c8d60ce21f9ebc7bb7557ab2646c14157614e9d17900a818d394e
sha512	57feb45d8cb7950f4e1175885ea462ecfbf452cc0222e684dff18f8259dfb68666a3df740c4a506fcde816ce64a032815f1d906f4c06d209093e072161a911a9
ripemd-160	b362d97f993cf6ef4e820846a6ea918bf2e93c17

21087921 as geometric shapes

Circle

Radius = n

Diameter	42175842
Circumference	132499315.38616
Area	1.3970675477088E+15

Sphere

Radius = n

Volume	3.9281666770328E+22
Surface area	5.588270190835E+15
Circumference	132499315.38616

Square

Length = n

Perimeter	84351684
Area	444700412102241
Diagonal	29822823.880452

Cube

Length = n

Surface area	2668202472613446
Volume	9.3778071590795E+21
Space diagonal	36525350.597999

Equilateral Triangle

Length = n

Perimeter	63263763
Area	1.9256092697697E+14
Altitude	18262675.298999

Triangular Pyramid

Length = n

Surface area	1.9256092697697E+14
Volume	1.1051851724741E+21
Height	9940941.2934841