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

81489142 (number)

81489142 is an even 8-digits composite number following 81489141 and preceding 81489143. In scientific notation, it is written as 8.1489142 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 16 positive divisors. There are 33797160 positive integers (up to 81489142) that are relatively prime to 81489142.

Interesting facts

81489142 has 16 divisors, whose sum is 144202752
The reverse of 81489142 is 24198418
Previous prime number is 31

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 37
Digital Root 1

Name

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

Notation

Scientific notation	8.1489142 × 10^7
Engineering notation	8.1489142 × 10^6

Prime Factorization of 81489142

Prime Factorization 2 × 7 × 31 × 187763

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81489142	Product of the distinct prime numbers

The prime factorization of 81489142 is 2 × 7 × 31 × 187763. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 2, 62, 57, 789, 480, 30, 5489, 33717, 68527, 826013, 687392, 6928272, 7826380, 56710634, 43115158, 663232323, 97368541, 186832022, 9060866914

Basic calculations (n = 81489142)

Multiplication

n×y

n×2	162978284
n×3	244467426
n×4	325956568
n×5	407445710

Division

n÷y

n÷2	40744571
n÷3	27163047.333333
n÷3	20372285.5
n÷5	16297828.4

Exponentiation

n^y

n²	6640480263896164
n³	5.4112703917283E+23
n⁴	4.4095978135194E+31
n⁵	3.5933434238878E+39

Nth Root

^y√n

²√n	9027.1336536023
³√n	433.5440680465
⁴√n	95.011229092157
⁵√n	38.213775602359

Divisors of 81489142

1, 2, 7, 14, 31, 62, 217, 434, 187763, 375526, 1314341, 2628682, 5820653, 11641306, 40744571, 81489142

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81489141	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489142 can be divided by 16 positive divisors. The sum of these divisors (counting 81489142) is 1, the average is 0.0625.

Base conversion 81489142

Base	System	Value
2	Binary	100110110110110110011110110
3	Ternary	12200100002002101
4	Quaternary	10312312303312
5	Quinary	131330123032
6	Senary	12030332314
8	Octal	466666366
10	Decimal	81489142
12	Duodecimal	2335a09a
16	Hexadecimal	4db6cf6
20	Vigesimal	15962h2
36	Base36	1cilfa

Cryptographic Hash Functions

md5	a35bf59f63199ff6feb383b03a1ce365
sha1	b15248624b8755179d4017b7c3d35440df9d86b3
sha256	562dbc340b100295fadd59053c96366801718d5ef67be9cb92ff07b32bc75ac7
sha512	f24859b6196466df1b9cf4e05aee0664a1a1ddd33231fe553b062c05126a3ce3fe20352e734688dae79213802aa15928e17081effd710a04b460fe97f21d6286
ripemd-160	6727134ff9cbf75dbca21d4b748a3c8b9e45c477

81489142 as geometric shapes

Circle

Radius = n

Diameter	162978284
Circumference	512011379.70907
Area	2.0861684013364E+16

Sphere

Radius = n

Volume	2.2666676412322E+24
Surface area	8.3446736053457E+16
Circumference	512011379.70907

Square

Length = n

Perimeter	325956568
Area	6640480263896164
Diagonal	115243049.80255

Cube

Length = n

Surface area	39842881583376984
Volume	5.4112703917283E+23
Space diagonal	141143334.20919

Equilateral Triangle

Length = n

Perimeter	244467426
Area	2.8754123009316E+15
Altitude	70571667.104597

Triangular Pyramid

Length = n

Surface area	2.8754123009316E+15
Volume	6.3772433147085E+22
Height	38414349.934182