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

20405721 (number)

20405721 is an odd 8-digits composite number following 20405720 and preceding 20405722. In scientific notation, it is written as 2.0405721 × 10^7. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 11485584 positive integers (up to 20405721) that are relatively prime to 20405721.

Interesting facts

20405721 has 8 divisors, whose sum is 21697984
The reverse of 20405721 is 12750402
Previous prime number is 67

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3

Name

Name	twenty million four hundred five thousand seven hundred twenty-one

Notation

Scientific notation	2.0405721 × 10^7
Engineering notation	2.0405721 × 10^6

Prime Factorization of 20405721

Prime Factorization 21 × 67 × 14503

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20405721	Product of the distinct prime numbers

The prime factorization of 20405721 is 21 × 67 × 14503. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 7, 65, 75, 792, 994, 484, 1122, 73623, 64916, 949533, 835302, 4457315, 4813565, 26432502, 13853737, 533977830, 405342546, 5123072681, 166310277

Basic calculations (n = 20405721)

Multiplication

n×y

n×2	40811442
n×3	61217163
n×4	81622884
n×5	102028605

Division

n÷y

n÷2	10202860.5
n÷3	6801907
n÷3	5101430.25
n÷5	4081144.2

Exponentiation

n^y

n²	416393449529841
n³	8.4968085573335E+21
n⁴	1.7338350481136E+29
n⁵	3.5380154251828E+36

Nth Root

^y√n

²√n	4517.2691972031
³√n	273.26498175225
⁴√n	67.210633066525
⁵√n	28.970126319721

Divisors of 20405721

1, 21, 67, 1407, 14503, 304563, 971701, 20405721

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	-20405720	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 20405721 can be divided by 8 positive divisors. The sum of these divisors (counting 20405721) is 1, the average is 0.125.

Base conversion 20405721

Base	System	Value
2	Binary	1001101110101110111011001
3	Ternary	1102101201101110
4	Quaternary	1031311313121
5	Quinary	20210440341
6	Senary	2005210533
8	Octal	115656731
10	Decimal	20405721
12	Duodecimal	6a00a49
16	Hexadecimal	1375dd9
20	Vigesimal	67ae61
36	Base36	c5d5l

Cryptographic Hash Functions

md5	d303c1ed18d039b192833ce6ce9e773d
sha1	18ad160d150019affbd48d6e5654bd96b5e2a0b3
sha256	d402156631962edb7a0462bcaaf4513b6aa13f1a6ac6cfff6d3f4231ce9b51ef
sha512	a9a9753611b62fc283c490f1581a8253e35cf407211d46f1c4eafd26070d85e2cf313bba5ba33ce86df9ebe2dd2fc718da21cdd8e646a725b77c1d0a6008c37a
ripemd-160	c4a97e470ea71e3ef5b798c126cd8990a9c56bb0

20405721 as geometric shapes

Circle

Radius = n

Diameter	40811442
Circumference	128212926.36961
Area	1.3081386020459E+15

Sphere

Radius = n

Volume	3.5591348456904E+22
Surface area	5.2325544081834E+15
Circumference	128212926.36961

Square

Length = n

Perimeter	81622884
Area	416393449529841
Diagonal	28858047.388201

Cube

Length = n

Surface area	2498360697179046
Volume	8.4968085573335E+21
Space diagonal	35343745.537075

Equilateral Triangle

Length = n

Perimeter	61217163
Area	1.8030365263114E+14
Altitude	17671872.768538

Triangular Pyramid

Length = n

Surface area	1.8030365263114E+14
Volume	1.0013584915557E+21
Height	9619349.1294005