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

20171991 (number)

20171991 is an odd 8-digits composite number following 20171990 and preceding 20171992. In scientific notation, it is written as 2.0171991 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 11500704 positive integers (up to 20171991) that are relatively prime to 20171991.

Interesting facts

20171991 has 8 divisors, whose sum is 21180544
The reverse of 20171991 is 19917102
Previous prime number is 1567

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	twenty million one hundred seventy-one thousand nine hundred ninety-one

Notation

Scientific notation	2.0171991 × 10^7
Engineering notation	2.0171991 × 10^6

Prime Factorization of 20171991

Prime Factorization 21 × 1567 × 613

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20171991	Product of the distinct prime numbers

The prime factorization of 20171991 is 21 × 1567 × 613. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 8, 73, 9, 619, 751, 7124, 351, 38077, 30228, 551913, 518586, 9946957, 4277359, 35077044, 1073210, 982454542, 573860390, 827509257, 3560436975

Basic calculations (n = 20171991)

Multiplication

n×y

n×2	40343982
n×3	60515973
n×4	80687964
n×5	100859955

Division

n÷y

n÷2	10085995.5
n÷3	6723997
n÷3	5042997.75
n÷5	4034398.2

Exponentiation

n^y

n²	406909220904081
n³	8.2081691418941E+21
n⁴	1.6557511405677E+29
n⁵	3.3399797105771E+36

Nth Root

^y√n

²√n	4491.3239696107
³√n	272.21763417383
⁴√n	67.017340812738
⁵√n	28.903454568104

Divisors of 20171991

1, 21, 613, 1567, 12873, 32907, 960571, 20171991

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	-20171990	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 20171991 can be divided by 8 positive divisors. The sum of these divisors (counting 20171991) is 1, the average is 0.125.

Base conversion 20171991

Base	System	Value
2	Binary	1001100111100110011010111
3	Ternary	1101221211202210
4	Quaternary	1030330303113
5	Quinary	20131000431
6	Senary	2000204503
8	Octal	114746327
10	Decimal	20171991
12	Duodecimal	6909733
16	Hexadecimal	133ccd7
20	Vigesimal	6619jb
36	Base36	c0ct3

Cryptographic Hash Functions

md5	070ddce544627d50b3560f35192cdeef
sha1	dc01d1e77b1b90cbec4cb45f433442ca1748e10b
sha256	a1ac964c211e8e8bd59241149620082008571bcd88b785c537dc2317c986004f
sha512	abcf4aa546ef04aa991257d73006e701958c16506aaf89802331219d8e727f91de154188988a66ef494f164727a70360bb18b2677aa04f350d40461a274c9d3d
ripemd-160	942f88578e23a35183851ad0703d4be0f0f2f086

20171991 as geometric shapes

Circle

Radius = n

Diameter	40343982
Circumference	126744357.46776
Area	1.2783430190702E+15

Sphere

Radius = n

Volume	3.4382298500796E+22
Surface area	5.1133720762808E+15
Circumference	126744357.46776

Square

Length = n

Perimeter	80687964
Area	406909220904081
Diagonal	28527503.252268

Cube

Length = n

Surface area	2441455325424486
Volume	8.2081691418941E+21
Space diagonal	34938913.301822

Equilateral Triangle

Length = n

Perimeter	60515973
Area	1.7619686116853E+14
Altitude	17469456.650911

Triangular Pyramid

Length = n

Surface area	1.7619686116853E+14
Volume	9.6734201022658E+20
Height	9509167.750756