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

20187991 (number)

20187991 is an odd 8-digits composite number following 20187990 and preceding 20187992. In scientific notation, it is written as 2.0187991 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 20178184 positive integers (up to 20187991) that are relatively prime to 20187991.

Interesting facts

20187991 has 4 divisors, whose sum is 20197800
The reverse of 20187991 is 19978102
Previous prime number is 2939

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	twenty million one hundred eighty-seven thousand nine hundred ninety-one

Notation

Scientific notation	2.0187991 × 10^7
Engineering notation	2.0187991 × 10^6

Prime Factorization of 20187991

Prime Factorization 2939 × 6869

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20187991	Product of the distinct prime numbers

The prime factorization of 20187991 is 2939 × 6869. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 6, 87, 43, 172, 539, 7991, 8318, 68240, 50866, 388054, 492146, 925979, 6904524, 93291656, 26907673, 198605216, 787108021, 1617315168, 629531190

Basic calculations (n = 20187991)

Multiplication

n×y

n×2	40375982
n×3	60563973
n×4	80751964
n×5	100939955

Division

n÷y

n÷2	10093995.5
n÷3	6729330.3333333
n÷3	5046997.75
n÷5	4037598.2

Exponentiation

n^y

n²	407554980616081
n³	8.2277162806826E+21
n⁴	1.6610106222497E+29
n⁵	3.3532467492882E+36

Nth Root

^y√n

²√n	4493.1048285122
³√n	272.28958759173
⁴√n	67.030626048936
⁵√n	28.908038236805

Divisors of 20187991

1, 2939, 6869, 20187991

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	-20187990	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 20187991 can be divided by 4 positive divisors. The sum of these divisors (counting 20187991) is 1, the average is 0.25.

Base conversion 20187991

Base	System	Value
2	Binary	1001101000000101101010111
3	Ternary	1101222122201101
4	Quaternary	1031000231113
5	Quinary	20132003431
6	Senary	2000410531
8	Octal	115005527
10	Decimal	20187991
12	Duodecimal	6916a47
16	Hexadecimal	1340b57
20	Vigesimal	6639jb
36	Base36	c0p5j

Cryptographic Hash Functions

md5	3c498b7cac3211ad0ce6dfcde50330bc
sha1	b6452f8ed1dc36872e6dfa83cb25344463d564f0
sha256	cdbc65e4051e5d309e5e85d49a30bf1007d2db8bda709a14132ad5478d3d990c
sha512	889febede8d8a5e13d1a474592b92f93e2949b450da4895aef97b954a3d99d8ef2fc3565c4645e30ca2aa6e620a2dab661569a401889970af444487ebc4d4db2
ripemd-160	263fbfeb9b2fb89c9ea0a35f27b4d9997212101d

20187991 as geometric shapes

Circle

Radius = n

Diameter	40375982
Circumference	126844888.43267
Area	1.2803717330374E+15

Sphere

Radius = n

Volume	3.4464177364285E+22
Surface area	5.1214869321496E+15
Circumference	126844888.43267

Square

Length = n

Perimeter	80751964
Area	407554980616081
Diagonal	28550130.669266

Cube

Length = n

Surface area	2445329883696486
Volume	8.2277162806826E+21
Space diagonal	34966626.114743

Equilateral Triangle

Length = n

Perimeter	60563973
Area	1.764764833262E+14
Altitude	17483313.057372

Triangular Pyramid

Length = n

Surface area	1.764764833262E+14
Volume	9.6964566262494E+20
Height	9516710.2230887