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

12721891 (number)

12721891 is an odd 8-digits composite number following 12721890 and preceding 12721892. In scientific notation, it is written as 1.2721891 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 10065600 positive integers (up to 12721891) that are relatively prime to 12721891.

Interesting facts

12721891 has 8 divisors, whose sum is 15657824
The reverse of 12721891 is 19812721
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	twelve million seven hundred twenty-one thousand eight hundred ninety-one

Notation

Scientific notation	1.2721891 × 10^7
Engineering notation	1.2721891 × 10^6

Prime Factorization of 12721891

Prime Factorization 7 × 13 × 139801

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	12721891	Product of the distinct prime numbers

The prime factorization of 12721891 is 7 × 13 × 139801. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 7, 91, 44, 619, 989, 7571, 4567, 76664, 53905, 688558, 950079, 631690, 3476849, 63636032, 21127942, 29424076, 254474900, 3810655172, 8522139006

Basic calculations (n = 12721891)

Multiplication

n×y

n×2	25443782
n×3	38165673
n×4	50887564
n×5	63609455

Division

n÷y

n÷2	6360945.5
n÷3	4240630.3333333
n÷3	3180472.75
n÷5	2544378.2

Exponentiation

n^y

n²	161846510615881
n³	2.0589936667856E+21
n⁴	2.6194292998536E+28
n⁵	3.3324094034944E+35

Nth Root

^y√n

²√n	3566.7759952091
³√n	233.44463103064
⁴√n	59.72249153551
⁵√n	26.357871358727

Divisors of 12721891

1, 7, 13, 91, 139801, 978607, 1817413, 12721891

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	-12721890	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 12721891 can be divided by 8 positive divisors. The sum of these divisors (counting 12721891) is 1, the average is 0.125.

Base conversion 12721891

Base	System	Value
2	Binary	110000100001111011100011
3	Ternary	212221100011011
4	Quaternary	300201323203
5	Quinary	11224100031
6	Senary	1132401351
8	Octal	60417343
10	Decimal	12721891
12	Duodecimal	4316257
16	Hexadecimal	c21ee3
20	Vigesimal	3ja4eb
36	Base36	7ko9v

Cryptographic Hash Functions

md5	ce905f574984afa0214278f20fb99b36
sha1	63bcfe36b6a6fa63b767e607cb02f4de1594c648
sha256	af4ce62b2ea8e376e62ca93c14cd609f2cfdd0de2a53471170a032077eec41b1
sha512	35ad677955b9fd4ae608501cb25b4c7125981c6082e429af53460b868ce177f6d9cd0f94bbd81022274dde7701ab8526b2af4a2d18cea2f6dd0150fd0af725c1
ripemd-160	c931e01d3238524ccfd18fedbc6759e7078e16de

12721891 as geometric shapes

Circle

Radius = n

Diameter	25443782
Circumference	79933998.61074
Area	5.0845580875999E+14

Sphere

Radius = n

Volume	8.6246925031487E+21
Surface area	2.03382323504E+15
Circumference	79933998.61074

Square

Length = n

Perimeter	50887564
Area	161846510615881
Diagonal	17991470.791232

Cube

Length = n

Surface area	971079063695286
Volume	2.0589936667856E+21
Space diagonal	22034961.580353

Equilateral Triangle

Length = n

Perimeter	38165673
Area	70081594853610
Altitude	11017480.790177

Triangular Pyramid

Length = n

Surface area	70081594853610
Volume	2.4265473070071E+20
Height	5997156.9304107