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

81491013 (number)

81491013 is an odd 8-digits composite number following 81491012 and preceding 81491014. In scientific notation, it is written as 8.1491013 × 10^7. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 51131520 positive integers (up to 81491013) that are relatively prime to 81491013.

Interesting facts

81491013 has 8 divisors, whose sum is 95871960
The reverse of 81491013 is 31019418
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9

Name

Name	eighty-one million four hundred ninety-one thousand thirteen

Notation

Scientific notation	8.1491013 × 10^7
Engineering notation	8.1491013 × 10^6

Prime Factorization of 81491013

Prime Factorization 9 × 17 × 532621

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81491013	Product of the distinct prime numbers

The prime factorization of 81491013 is 9 × 17 × 532621. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 3, 52, 40, 116, 857, 7947, 7941, 7776, 90466, 631070, 129512, 4664492, 3540299, 17261781, 7811235, 537427564, 552920428, 5173451176, 2972478371

Basic calculations (n = 81491013)

Multiplication

n×y

n×2	162982026
n×3	244473039
n×4	325964052
n×5	407455065

Division

n÷y

n÷2	40745506.5
n÷3	27163671
n÷3	20372753.25
n÷5	16298202.6

Exponentiation

n^y

n²	6640785199766169
n³	5.4116431304435E+23
n⁴	4.4100028069433E+31
n⁵	3.5937559607066E+39

Nth Root

^y√n

²√n	9027.2372850169
³√n	433.54738609486
⁴√n	95.011774454627
⁵√n	38.213951079277

Divisors of 81491013

1, 9, 17, 153, 532621, 4793589, 9054557, 81491013

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	-81491012	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 81491013 can be divided by 8 positive divisors. The sum of these divisors (counting 81491013) is 1, the average is 0.125.

Base conversion 81491013

Base	System	Value
2	Binary	100110110110111010001000101
3	Ternary	12200100011122200
4	Quaternary	10312313101011
5	Quinary	131330203023
6	Senary	12030345113
8	Octal	466672105
10	Decimal	81491013
12	Duodecimal	2335b199
16	Hexadecimal	4db7445
20	Vigesimal	15967ad
36	Base36	1cimv9

Cryptographic Hash Functions

md5	ac51c358c87f9d6b1b45d665f3da6bc3
sha1	ca09941f4e17b03cc2fbd42a02c909e2953398d2
sha256	aade96e0dbda3a07db9be284d6c431840a75373ff7cb46d675a9ee1f2b3e3cdf
sha512	36e3749f6089efca249e103bc419042d7e9946ee914dd2a7b641f8911b47749cfda03321b329f98bfa218dd0235f24bcaeb30f8957d2a4dac6617a904d7d8150
ripemd-160	320cce59b8eeb695d40bd3d49cca92c2a9c006d9

81491013 as geometric shapes

Circle

Radius = n

Diameter	162982026
Circumference	512023135.54878
Area	2.0862641997653E+16

Sphere

Radius = n

Volume	2.2668237736601E+24
Surface area	8.3450567990613E+16
Circumference	512023135.54878

Square

Length = n

Perimeter	325964052
Area	6640785199766169
Diagonal	115245695.79612

Cube

Length = n

Surface area	39844711198597014
Volume	5.4116431304435E+23
Space diagonal	141146574.87626

Equilateral Triangle

Length = n

Perimeter	244473039
Area	2.8755443420366E+15
Altitude	70573287.438128

Triangular Pyramid

Length = n

Surface area	2.8755443420366E+15
Volume	6.377682591497E+22
Height	38415231.932041