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

12987891 (number)

12987891 is an odd 8-digits composite number following 12987890 and preceding 12987892. In scientific notation, it is written as 1.2987891 × 10^7. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 7420896 positive integers (up to 12987891) that are relatively prime to 12987891.

Interesting facts

12987891 has 8 divisors, whose sum is 14530640
The reverse of 12987891 is 19878921
Previous prime number is 9

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9

Name

Name	twelve million nine hundred eighty-seven thousand eight hundred ninety-one

Notation

Scientific notation	1.2987891 × 10^7
Engineering notation	1.2987891 × 10^6

Prime Factorization of 12987891

Prime Factorization 147 × 9 × 9817

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	12987891	Product of the distinct prime numbers

The prime factorization of 12987891 is 147 × 9 × 9817. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 6, 83, 37, 126, 496, 8138, 1644, 93715, 16967, 235348, 960769, 7355458, 9134093, 73511022, 82360131, 137333304, 908871438, 4912380610, 5684959683

Basic calculations (n = 12987891)

Multiplication

n×y

n×2	25975782
n×3	38963673
n×4	51951564
n×5	64939455

Division

n÷y

n÷2	6493945.5
n÷3	4329297
n÷3	3246972.75
n÷5	2597578.2

Exponentiation

n^y

n²	168685312627881
n³	2.1908664537118E+21
n⁴	2.8454734696366E+28
n⁵	3.6956699267032E+35

Nth Root

^y√n

²√n	3603.8716680814
³√n	235.06044016541
⁴√n	60.032255230679
⁵√n	26.467183416876

Divisors of 12987891

1, 9, 147, 1323, 9817, 88353, 1443099, 12987891

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	-12987890	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 12987891 can be divided by 8 positive divisors. The sum of these divisors (counting 12987891) is 1, the average is 0.125.

Base conversion 12987891

Base	System	Value
2	Binary	110001100010110111110011
3	Ternary	220102212001000
4	Quaternary	301202313303
5	Quinary	11311103031
6	Senary	1142213043
8	Octal	61426763
10	Decimal	12987891
12	Duodecimal	4424183
16	Hexadecimal	c62df3
20	Vigesimal	4139eb
36	Base36	7qdir

Cryptographic Hash Functions

md5	dbed5c5eb920774c24b757a824aa4a63
sha1	b6f73909b02d1f9daec3ec2694116f115462d330
sha256	7b2d65f5eee3983367a9e86712367d95b50d4f98233d18a686d0eab990e6b3eb
sha512	63fa443fa418286f95b80f58c1f96941177d2d9058f5ec81bb6d2b000aea608f59bc7aba3e58c4c5642755aa5dfb61ec8b4caabd89ce3b7d6c0d25fcb75bb052
ripemd-160	87b678539e5a09a53a9a5488c82aac3df22cff97

12987891 as geometric shapes

Circle

Radius = n

Diameter	25975782
Circumference	81605325.90245
Area	5.2994053892025E+14

Sphere

Radius = n

Volume	9.1770799413033E+21
Surface area	2.119762155681E+15
Circumference	81605325.90245

Square

Length = n

Perimeter	51951564
Area	168685312627881
Diagonal	18367651.598823

Cube

Length = n

Surface area	1012111875767286
Volume	2.1908664537118E+21
Space diagonal	22495687.095167

Equilateral Triangle

Length = n

Perimeter	38963673
Area	73042882990532
Altitude	11247843.547583

Triangular Pyramid

Length = n

Surface area	73042882990532
Volume	2.5819608768229E+20
Height	6122550.5329412