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

21087911 (number)

21087911 is an odd 8-digits composite number following 21087910 and preceding 21087912. In scientific notation, it is written as 2.1087911 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 19275552 positive integers (up to 21087911) that are relatively prime to 21087911.

Interesting facts

21087911 has 8 divisors, whose sum is 22932000
The reverse of 21087911 is 11978012
Previous prime number is 103

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

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

Notation

Scientific notation	2.1087911 × 10^7
Engineering notation	2.1087911 × 10^6

Prime Factorization of 21087911

Prime Factorization 13 × 103 × 15749

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21087911	Product of the distinct prime numbers

The prime factorization of 21087911 is 13 × 103 × 15749. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 1, 16, 37, 61, 643, 5646, 7780, 4365, 88879, 795855, 857062, 8920360, 5277915, 43197448, 6125194, 162970076, 668259002, 60863327, 8194600548

Basic calculations (n = 21087911)

Multiplication

n×y

n×2	42175822
n×3	63263733
n×4	84351644
n×5	105439555

Division

n÷y

n÷2	10543955.5
n÷3	7029303.6666667
n÷3	5271977.75
n÷5	4217582.2

Exponentiation

n^y

n²	444699990343921
n³	9.3777938180735E+21
n⁴	1.9775808141188E+29
n⁵	4.1703048203446E+36

Nth Root

^y√n

²√n	4592.1575539173
³√n	276.27686545573
⁴√n	67.765459888629
⁵√n	29.161288668148

Divisors of 21087911

1, 13, 103, 1339, 15749, 204737, 1622147, 21087911

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21087910	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21087911 can be divided by 8 positive divisors. The sum of these divisors (counting 21087911) is 1, the average is 0.125.

Base conversion 21087911

Base	System	Value
2	Binary	1010000011100011010100111
3	Ternary	1110200101011202
4	Quaternary	1100130122213
5	Quinary	20344303121
6	Senary	2031553115
8	Octal	120343247
10	Decimal	21087911
12	Duodecimal	708b79b
16	Hexadecimal	141c6a7
20	Vigesimal	6bfjfb
36	Base36	cjzjb

Cryptographic Hash Functions

md5	91e2e93b775c0b774bd9091b9b286301
sha1	14efc94d3a1da48a217fee3ab78cbc125f89352d
sha256	90212b38afa309612372dbcc878251055a04839f5d07ccf0b5dcdeae04545008
sha512	1693aed91707b35bdc35851ed509db6666f4cd85a73acbff1adefb4f4a7ff3bc626cd058f0c41951d8820dc2a402c7802298ce2a57aed99e8b88f1a35e06b317
ripemd-160	bde058920b8fdab0f4e8398e892f97c742cb4a8f

21087911 as geometric shapes

Circle

Radius = n

Diameter	42175822
Circumference	132499252.55431
Area	1.3970662227159E+15

Sphere

Radius = n

Volume	3.9281610887652E+22
Surface area	5.5882648908637E+15
Circumference	132499252.55431

Square

Length = n

Perimeter	84351644
Area	444699990343921
Diagonal	29822809.738317

Cube

Length = n

Surface area	2668199942063526
Volume	9.3777938180735E+21
Space diagonal	36525333.277491

Equilateral Triangle

Length = n

Perimeter	63263733
Area	1.9256074435027E+14
Altitude	18262666.638745

Triangular Pyramid

Length = n

Surface area	1.9256074435027E+14
Volume	1.1051836002215E+21
Height	9940936.5794389