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

12981905 (number)

12981905 is an odd 8-digits composite number following 12981904 and preceding 12981906. In scientific notation, it is written as 1.2981905 × 10^7. The sum of its digits is 35. It has a total of 3 prime factors and 8 positive divisors. There are 10310256 positive integers (up to 12981905) that are relatively prime to 12981905.

Interesting facts

12981905 has 8 divisors, whose sum is 15691200
The reverse of 12981905 is 50918921
Previous prime number is 139

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8

Name

Name	twelve million nine hundred eighty-one thousand nine hundred five

Notation

Scientific notation	1.2981905 × 10^7
Engineering notation	1.2981905 × 10^6

Prime Factorization of 12981905

Prime Factorization 5 × 139 × 18679

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	12981905	Product of the distinct prime numbers

The prime factorization of 12981905 is 5 × 139 × 18679. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 5, 73, 3, 520, 831, 1036, 2203, 24870, 35468, 926156, 92581, 7999490, 7233580, 16263542, 46284237, 972047005, 803123992, 2366417914, 4434111010

Basic calculations (n = 12981905)

Multiplication

n×y

n×2	25963810
n×3	38945715
n×4	51927620
n×5	64909525

Division

n÷y

n÷2	6490952.5
n÷3	4327301.6666667
n÷3	3245476.25
n÷5	2596381

Exponentiation

n^y

n²	168529857429025
n³	2.1878385988071E+21
n⁴	2.8402312845047E+28
n⁵	3.6871612713469E+35

Nth Root

^y√n

²√n	3603.0410766462
³√n	235.02432221475
⁴√n	60.025336955708
⁵√n	26.464743270496

Divisors of 12981905

1, 5, 139, 695, 18679, 93395, 2596381, 12981905

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	-12981904	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 12981905 can be divided by 8 positive divisors. The sum of these divisors (counting 12981905) is 1, the average is 0.125.

Base conversion 12981905

Base	System	Value
2	Binary	110001100001011010010001
3	Ternary	220102112211022
4	Quaternary	301201122101
5	Quinary	11310410110
6	Senary	1142125225
8	Octal	61413221
10	Decimal	12981905
12	Duodecimal	4420815
16	Hexadecimal	c61691
20	Vigesimal	412ef5
36	Base36	7q8wh

Cryptographic Hash Functions

md5	f6b52a0039845498796556bdbe8475d5
sha1	6d92b029448bfa7d948a58ed857033145d1ceeda
sha256	984c99193ed21c74889c720262e67ca39be00668b2f2c6834e756fdbb4df6843
sha512	603eb06973c10a3dc6f4ac9c095ce732f928ec67e4c453113c097759f2b5994c1e11e6e31c8181ec363bb7d590b93c37c94f3e8f6f46bfdcf34b86e73aae6957
ripemd-160	62f1b3ddb04a4060184170e7cfa0a9f5d7d7834a

12981905 as geometric shapes

Circle

Radius = n

Diameter	25963810
Circumference	81567714.755201
Area	5.2945216200956E+14

Sphere

Radius = n

Volume	9.164396892337E+21
Surface area	2.1178086480382E+15
Circumference	81567714.755201

Square

Length = n

Perimeter	51927620
Area	168529857429025
Diagonal	18359186.116439

Cube

Length = n

Surface area	1011179144574150
Volume	2.1878385988071E+21
Space diagonal	22485319.039032

Equilateral Triangle

Length = n

Perimeter	38945715
Area	72975568914853
Altitude	11242659.519516

Triangular Pyramid

Length = n

Surface area	72975568914853
Volume	2.578392515597E+20
Height	6119728.7054797