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

81489481 (number)

81489481 is an odd 8-digits composite number following 81489480 and preceding 81489482. In scientific notation, it is written as 8.1489481 × 10^7. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 81445392 positive integers (up to 81489481) that are relatively prime to 81489481.

Interesting facts

81489481 has 4 divisors, whose sum is 81533572
The reverse of 81489481 is 18498418
Previous prime number is 1933

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7

Name

Name	eighty-one million four hundred eighty-nine thousand four hundred eighty-one

Notation

Scientific notation	8.1489481 × 10^7
Engineering notation	8.1489481 × 10^6

Prime Factorization of 81489481

Prime Factorization 1933 × 42157

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81489481	Product of the distinct prime numbers

The prime factorization of 81489481 is 1933 × 42157. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 8, 88, 1, 592, 794, 7407, 9190, 96170, 50926, 348911, 603637, 9147833, 8551120, 19200533, 22375774, 670859082, 41550389, 1256000442, 2750813171

Basic calculations (n = 81489481)

Multiplication

n×y

n×2	162978962
n×3	244468443
n×4	325957924
n×5	407447405

Division

n÷y

n÷2	40744740.5
n÷3	27163160.333333
n÷3	20372370.25
n÷5	16297896.2

Exponentiation

n^y

n²	6640535513649361
n³	5.4113379256935E+23
n⁴	4.4096711908038E+31
n⁵	3.5934181671926E+39

Nth Root

^y√n

²√n	9027.1524303071
³√n	433.54466923594
⁴√n	95.011327905188
⁵√n	38.213807396652

Divisors of 81489481

1, 1933, 42157, 81489481

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	-81489480	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 81489481 can be divided by 4 positive divisors. The sum of these divisors (counting 81489481) is 1, the average is 0.25.

Base conversion 81489481

Base	System	Value
2	Binary	100110110110110111001001001
3	Ternary	12200100002112221
4	Quaternary	10312312321021
5	Quinary	131330130411
6	Senary	12030334041
8	Octal	466667111
10	Decimal	81489481
12	Duodecimal	2335a321
16	Hexadecimal	4db6e49
20	Vigesimal	15963e1
36	Base36	1cilop

Cryptographic Hash Functions

md5	b1b155d8123fc8e35c61c28b52240051
sha1	f4b4e6536604848d509296477c299ada2561a2b9
sha256	e5c42a4fc1bc3f784b1edee0a574c5171130b6fa1f96f49ab43ec5702afcecbb
sha512	4bc7d98a617e2452625a346ae7a3956a206ea530e4657e95a1b45f3deb7436a39620474290c96efa0dca4205355dd63971e0ecd08adf883431779610d6655606
ripemd-160	39f1c98ab6eb5e077d89d31f5f0ccdb2b91f8c44

81489481 as geometric shapes

Circle

Radius = n

Diameter	162978962
Circumference	512013509.70889
Area	2.0861857585583E+16

Sphere

Radius = n

Volume	2.2666959297934E+24
Surface area	8.3447430342332E+16
Circumference	512013509.70889

Square

Length = n

Perimeter	325957924
Area	6640535513649361
Diagonal	115243529.22094

Cube

Length = n

Surface area	39843213081896166
Volume	5.4113379256935E+23
Space diagonal	141143921.37442

Equilateral Triangle

Length = n

Perimeter	244468443
Area	2.8754362247765E+15
Altitude	70571960.687209

Triangular Pyramid

Length = n

Surface area	2.8754362247765E+15
Volume	6.3773229042498E+22
Height	38414509.740315