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

28161721 (number)

28161721 is an odd 8-digits composite number following 28161720 and preceding 28161722. In scientific notation, it is written as 2.8161721 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 12 positive divisors. There are 23804928 positive integers (up to 28161721) that are relatively prime to 28161721.

Interesting facts

28161721 has 12 divisors, whose sum is 33212532
The reverse of 28161721 is 12716182
Previous prime number is 73

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty-eight million one hundred sixty-one thousand seven hundred twenty-one

Notation

Scientific notation	2.8161721 × 10^7
Engineering notation	2.8161721 × 10^6

Prime Factorization of 28161721

Prime Factorization 7 × 7 × 73 × 7873

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	4023103	Product of the distinct prime numbers

The prime factorization of 28161721 is 7 × 7 × 73 × 7873. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 6, 82, 74, 744, 122, 7913, 436, 64281, 71002, 78814, 662478, 762918, 4863964, 95177559, 11491031, 847496872, 624043024, 5689047869, 8630465317

Basic calculations (n = 28161721)

Multiplication

n×y

n×2	56323442
n×3	84485163
n×4	112646884
n×5	140808605

Division

n÷y

n÷2	14080860.5
n÷3	9387240.3333333
n÷3	7040430.25
n÷5	5632344.2

Exponentiation

n^y

n²	793082529681841
n³	2.2334568930874E+22
n⁴	6.2897989888655E+29
n⁵	1.7713156427051E+37

Nth Root

^y√n

²√n	5306.7618186612
³√n	304.24239453881
⁴√n	72.847524451152
⁵√n	30.898104546614

Divisors of 28161721

1, 7, 49, 73, 511, 3577, 7873, 55111, 385777, 574729, 4023103, 28161721

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-28161720	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28161721 can be divided by 12 positive divisors. The sum of these divisors (counting 28161721) is 1, the average is 0.083333333333333.

Base conversion 28161721

Base	System	Value
2	Binary	1101011011011011010111001
3	Ternary	1221222202121201
4	Quaternary	1223123122321
5	Quinary	24202133341
6	Senary	2443334201
8	Octal	153333271
10	Decimal	28161721
12	Duodecimal	9521361
16	Hexadecimal	1adb6b9
20	Vigesimal	8g0461
36	Base36	grlq1

Cryptographic Hash Functions

md5	9f3bb810f9d6c1e42b482be1f6b59b24
sha1	c0ffe8450cfaacebbeb6a07507af6d4db5fe6241
sha256	4e43bb9e1de29fa9c9f957349cb641c1d39566b6527e335b83107a0d99abec9f
sha512	7faf6149b4f3eebf77e5fd15233c258f2bb59bad38a1ca1859ee2ec8487ef8bf388dbfc342642c2c78dde3df3cf2f421cfdcde5e8e707638344fa90c224bfdf6
ripemd-160	ddf7a3dc6a081698a8e76cb43096a230eda60e0b

28161721 as geometric shapes

Circle

Radius = n

Diameter	56323442
Circumference	176945311.61209
Area	2.4915422489389E+15

Sphere

Radius = n

Volume	9.3554823565772E+22
Surface area	9.9661689957555E+15
Circumference	176945311.61209

Square

Length = n

Perimeter	112646884
Area	793082529681841
Diagonal	39826687.777967

Cube

Length = n

Surface area	4758495178091046
Volume	2.2334568930874E+22
Space diagonal	48777531.600579

Equilateral Triangle

Length = n

Perimeter	84485163
Area	3.4341480900105E+14
Altitude	24388765.80029

Triangular Pyramid

Length = n

Surface area	3.4341480900105E+14
Volume	2.6321541909833E+21
Height	13275562.592656