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

20155721 (number)

20155721 is an odd 8-digits composite number following 20155720 and preceding 20155722. In scientific notation, it is written as 2.0155721 × 10^7. The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors. There are 20143632 positive integers (up to 20155721) that are relatively prime to 20155721.

Interesting facts

20155721 has 4 divisors, whose sum is 20167812
The reverse of 20155721 is 12755102
Previous prime number is 1997

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5

Name

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

Notation

Scientific notation	2.0155721 × 10^7
Engineering notation	2.0155721 × 10^6

Prime Factorization of 20155721

Prime Factorization 1997 × 10093

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20155721	Product of the distinct prime numbers

The prime factorization of 20155721 is 1997 × 10093. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 9, 78, 9, 405, 856, 5747, 4629, 9438, 63065, 829005, 588009, 8417093, 3712818, 77017309, 8994303, 102532494, 412426862, 460737175, 4131263463

Basic calculations (n = 20155721)

Multiplication

n×y

n×2	40311442
n×3	60467163
n×4	80622884
n×5	100778605

Division

n÷y

n÷2	10077860.5
n÷3	6718573.6666667
n÷3	5038930.25
n÷5	4031144.2

Exponentiation

n^y

n²	406253089029841
n³	8.1883239178736E+21
n⁴	1.6504157234629E+29
n⁵	3.3265318856131E+36

Nth Root

^y√n

²√n	4489.5123343187
³√n	272.14442751493
⁴√n	67.003823281353
⁵√n	28.89879056645

Divisors of 20155721

1, 1997, 10093, 20155721

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20155720	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20155721 can be divided by 4 positive divisors. The sum of these divisors (counting 20155721) is 1, the average is 0.25.

Base conversion 20155721

Base	System	Value
2	Binary	1001100111000110101001001
3	Ternary	1101221000110012
4	Quaternary	1030320311021
5	Quinary	20124440341
6	Senary	2000001305
8	Octal	114706511
10	Decimal	20155721
12	Duodecimal	6900235
16	Hexadecimal	1338d49
20	Vigesimal	65j961
36	Base36	c0095

Cryptographic Hash Functions

md5	8e646709428904a4e95a82c36cd2c33a
sha1	6c2db7be4602d09a678ff5bbc396cb811881e0c7
sha256	63b4f4939a03274829de62fc6f604436e2630b9eef233196bfc12bd771f1c950
sha512	1044b0439c018587155abe333ae28f394b49311ff85faded3461a7ebc45d696f1c04060a97138a14fca9faaba5ba8d7dd3887e75ba202bd0b6aaaccabd2d2222
ripemd-160	dd73de3591973618d5308758dfad27d5f201946f

20155721 as geometric shapes

Circle

Radius = n

Diameter	40311442
Circumference	126642130.04281
Area	1.2762817199943E+15

Sphere

Radius = n

Volume	3.4299171020807E+22
Surface area	5.1051268799772E+15
Circumference	126642130.04281

Square

Length = n

Perimeter	80622884
Area	406253089029841
Diagonal	28504493.997608

Cube

Length = n

Surface area	2437518534179046
Volume	8.1883239178736E+21
Space diagonal	34910732.835183

Equilateral Triangle

Length = n

Perimeter	60467163
Area	1.7591274773287E+14
Altitude	17455366.417591

Triangular Pyramid

Length = n

Surface area	1.7591274773287E+14
Volume	9.6500322814674E+20
Height	9501497.9992027