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

81489749 (number)

81489749 is an odd 8-digits composite number following 81489748 and preceding 81489750. In scientific notation, it is written as 8.1489749 × 10^7. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 74081480 positive integers (up to 81489749) that are relatively prime to 81489749.

Interesting facts

81489749 has 4 divisors, whose sum is 82163340
The reverse of 81489749 is 94798418
Previous prime number is 121

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5

Name

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

Notation

Scientific notation	8.1489749 × 10^7
Engineering notation	8.1489749 × 10^6

Prime Factorization of 81489749

Prime Factorization 121 × 673469

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81489749	Product of the distinct prime numbers

The prime factorization of 81489749 is 121 × 673469. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 2, 65, 72, 618, 422, 9369, 3456, 50269, 18955, 901704, 695188, 2720278, 3996194, 71605807, 91010757, 97927204, 275856719, 8661447475, 8505149229

Basic calculations (n = 81489749)

Multiplication

n×y

n×2	162979498
n×3	244469247
n×4	325958996
n×5	407448745

Division

n÷y

n÷2	40744874.5
n÷3	27163249.666667
n÷3	20372437.25
n÷5	16297949.8

Exponentiation

n^y

n²	6640579192083001
n³	5.4113913157747E+23
n⁴	4.4097292006326E+31
n⁵	3.5934772571752E+39

Nth Root

^y√n

²√n	9027.1672744001
³√n	433.54514451137
⁴√n	95.011406022646
⁵√n	38.213832531889

Divisors of 81489749

1, 121, 673469, 81489749

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	-81489748	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 81489749 can be divided by 4 positive divisors. The sum of these divisors (counting 81489749) is 1, the average is 0.25.

Base conversion 81489749

Base	System	Value
2	Binary	100110110110110111101010101
3	Ternary	12200100002220212
4	Quaternary	10312312331111
5	Quinary	131330132444
6	Senary	12030335205
8	Octal	466667525
10	Decimal	81489749
12	Duodecimal	2335a505
16	Hexadecimal	4db6f55
20	Vigesimal	1596479
36	Base36	1cilw5

Cryptographic Hash Functions

md5	dc8dcccfff403b6580c3c19682ab029b
sha1	312246bcefe20cb353012d2c661859c205144534
sha256	0be93d3c386ee6d4897d0825b76ae53f20b827a7d7cd29e3bf9a04349a4fb5a8
sha512	b200a0631a54bd20ba30c7cf18abee9070fe520784a3d674c793f5d8c694134c4e312c689ed178ce05239f3b69d235097eda0e8beab9f05712c836272fc02b37
ripemd-160	bf7b7d06a15312151419e768d175c0261480f6c7

81489749 as geometric shapes

Circle

Radius = n

Diameter	162979498
Circumference	512015193.60255
Area	2.0861994805429E+16

Sphere

Radius = n

Volume	2.2667182937783E+24
Surface area	8.3447979221717E+16
Circumference	512015193.60255

Square

Length = n

Perimeter	325958996
Area	6640579192083001
Diagonal	115243908.23018

Cube

Length = n

Surface area	39843475152498006
Volume	5.4113913157747E+23
Space diagonal	141144385.56404

Equilateral Triangle

Length = n

Perimeter	244469247
Area	2.8754551380931E+15
Altitude	70572192.782018

Triangular Pyramid

Length = n

Surface area	2.8754551380931E+15
Volume	6.3773858250638E+22
Height	38414636.076726