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

21087945 (number)

21087945 is an odd 8-digits composite number following 21087944 and preceding 21087946. In scientific notation, it is written as 2.1087945 × 10^7. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 11246688 positive integers (up to 21087945) that are relatively prime to 21087945.

Interesting facts

21087945 has 8 divisors, whose sum is 23952200
The reverse of 21087945 is 54978012
Previous prime number is 9

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9

Name

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

Notation

Scientific notation	2.1087945 × 10^7
Engineering notation	2.1087945 × 10^6

Prime Factorization of 21087945

Prime Factorization 45 × 9 × 52069

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21087945	Product of the distinct prime numbers

The prime factorization of 21087945 is 45 × 9 × 52069. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 3, 15, 15, 690, 710, 8326, 459, 36142, 48377, 952933, 508102, 1463598, 926526, 6132795, 76109813, 170298418, 843813431, 1133287706, 7101122968

Basic calculations (n = 21087945)

Multiplication

n×y

n×2	42175890
n×3	63263835
n×4	84351780
n×5	105439725

Division

n÷y

n÷2	10543972.5
n÷3	7029315
n÷3	5271986.25
n÷5	4217589

Exponentiation

n^y

n²	444701424323025
n³	9.3778391775456E+21
n⁴	1.9775935679493E+29
n⁵	4.1703384393268E+36

Nth Root

^y√n

²√n	4592.1612558794
³√n	276.27701393588
⁴√n	67.765487203144
⁵√n	29.16129807148

Divisors of 21087945

1, 9, 45, 405, 52069, 468621, 2343105, 21087945

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	-21087944	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 21087945 can be divided by 8 positive divisors. The sum of these divisors (counting 21087945) is 1, the average is 0.125.

Base conversion 21087945

Base	System	Value
2	Binary	1010000011100011011001001
3	Ternary	1110200101020000
4	Quaternary	1100130123021
5	Quinary	20344303240
6	Senary	2031553213
8	Octal	120343311
10	Decimal	21087945
12	Duodecimal	708b809
16	Hexadecimal	141c6c9
20	Vigesimal	6bfjh5
36	Base36	cjzk9

Cryptographic Hash Functions

md5	113a5a5376baa671542eb246855c30f5
sha1	91a84993900ea7f530fcfc87b1fe23a25ae3b3a3
sha256	dfbbe831f2cade77f8de53c0116efb7fdaa899e52eccc0f897153676d8907bc4
sha512	8b0151e1cf4396955884283cc2f0d9e2e386fd8cf6b33746a6fb3fe2bb3d7824e61c1e76d123dff61261fb5751963cd7097f7188ca941ae47659ec4457e586ee
ripemd-160	c6f58301b44c6680d04ec07d4e5dfd37300d8701

21087945 as geometric shapes

Circle

Radius = n

Diameter	42175890
Circumference	132499466.18261
Area	1.3970707276941E+15

Sphere

Radius = n

Volume	3.9281800888965E+22
Surface area	5.5882829107765E+15
Circumference	132499466.18261

Square

Length = n

Perimeter	84351780
Area	444701424323025
Diagonal	29822857.821578

Cube

Length = n

Surface area	2668208545938150
Volume	9.3778391775456E+21
Space diagonal	36525392.167218

Equilateral Triangle

Length = n

Perimeter	63263835
Area	1.9256136528143E+14
Altitude	18262696.083609

Triangular Pyramid

Length = n

Surface area	1.9256136528143E+14
Volume	1.1051889458866E+21
Height	9940952.6071926