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

21686945 (number)

21686945 is an odd 8-digits composite number following 21686944 and preceding 21686946. In scientific notation, it is written as 2.1686945 × 10^7. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 14807040 positive integers (up to 21686945) that are relatively prime to 21686945.

Interesting facts

21686945 has 8 divisors, whose sum is 22402656
The reverse of 21686945 is 54968612
Previous prime number is 257

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

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

Notation

Scientific notation	2.1686945 × 10^7
Engineering notation	2.1686945 × 10^6

Prime Factorization of 21686945

Prime Factorization 35 × 257 × 2411

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21686945	Product of the distinct prime numbers

The prime factorization of 21686945 is 35 × 257 × 2411. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 9, 29, 30, 437, 147, 7604, 9587, 51134, 56398, 443957, 322359, 3475536, 1471477, 22536212, 82590804, 658493683, 26465076, 77099411, 6816240346

Basic calculations (n = 21686945)

Multiplication

n×y

n×2	43373890
n×3	65060835
n×4	86747780
n×5	108434725

Division

n÷y

n÷2	10843472.5
n÷3	7228981.6666667
n÷3	5421736.25
n÷5	4337389

Exponentiation

n^y

n²	470323583433025
n³	1.0199881686115E+22
n⁴	2.2120427313328E+29
n⁵	4.7972449052065E+36

Nth Root

^y√n

²√n	4656.924414246
³√n	278.86849915629
⁴√n	68.241661866091
⁵√n	29.325111739419

Divisors of 21686945

1, 35, 257, 2411, 8995, 84385, 619627, 21686945

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	-21686944	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 21686945 can be divided by 8 positive divisors. The sum of these divisors (counting 21686945) is 1, the average is 0.125.

Base conversion 21686945

Base	System	Value
2	Binary	1010010101110101010100001
3	Ternary	1111210210220012
4	Quaternary	1102232222201
5	Quinary	21022440240
6	Senary	2052454305
8	Octal	122565241
10	Decimal	21686945
12	Duodecimal	731a395
16	Hexadecimal	14aeaa1
20	Vigesimal	6fah75
36	Base36	cwtr5

Cryptographic Hash Functions

md5	e9d07355aca8c7343bd3d00acc78f2d8
sha1	6a7ca8320482d8f13df35832aa0413cea6ef622f
sha256	b46781dcd5e0cd6859891cd1090638d1ca77b48fbbf67d17f9137931aa7b26db
sha512	f3362c52da63d047e27d648f6817f435ef4d9efedf3ccea156cef7a42a60f75ca9cf5d7b65f7157c0dde24d00c25adc97624bb9c518a056f7fb5e744e20b3ebf
ripemd-160	5d8a4b4c3ff6c8fc47604a5b50849efc0d3109d6

21686945 as geometric shapes

Circle

Radius = n

Diameter	43373890
Circumference	136263094.18161
Area	1.4775651145232E+15

Sphere

Radius = n

Volume	4.2725164496778E+22
Surface area	5.9102604580929E+15
Circumference	136263094.18161

Square

Length = n

Perimeter	86747780
Area	470323583433025
Diagonal	30669971.745439

Cube

Length = n

Surface area	2821941500598150
Volume	1.0199881686115E+22
Space diagonal	37562890.600952

Equilateral Triangle

Length = n

Perimeter	65060835
Area	2.0365608562596E+14
Altitude	18781445.300476

Triangular Pyramid

Length = n

Surface area	2.0365608562596E+14
Volume	1.2020675845921E+21
Height	10223323.915146