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

81489731 (number)

81489731 is an odd 8-digits composite number following 81489730 and preceding 81489732. In scientific notation, it is written as 8.1489731 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 78372360 positive integers (up to 81489731) that are relatively prime to 81489731.

Interesting facts

81489731 has 4 divisors, whose sum is 81510912
The reverse of 81489731 is 13798418
Previous prime number is 5053

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

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

Notation

Scientific notation	8.1489731 × 10^7
Engineering notation	8.1489731 × 10^6

Prime Factorization of 81489731

Prime Factorization 5053 × 16127

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81489731	Product of the distinct prime numbers

The prime factorization of 81489731 is 5053 × 16127. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 2, 5, 80, 578, 76, 9727, 57, 73030, 43226, 865156, 464893, 5199505, 3878008, 6311151, 77035899, 874719399, 261643328, 4939424317, 6501917566

Basic calculations (n = 81489731)

Multiplication

n×y

n×2	162979462
n×3	244469193
n×4	325958924
n×5	407448655

Division

n÷y

n÷2	40744865.5
n÷3	27163243.666667
n÷3	20372432.75
n÷5	16297946.2

Exponentiation

n^y

n²	6640576258452361
n³	5.4113877298627E+23
n⁴	4.4097253044321E+31
n⁵	3.5934732884207E+39

Nth Root

^y√n

²√n	9027.1662774095
³√n	433.54511258992
⁴√n	95.011400775957
⁵√n	38.213830843704

Divisors of 81489731

1, 5053, 16127, 81489731

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	-81489730	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 81489731 can be divided by 4 positive divisors. The sum of these divisors (counting 81489731) is 1, the average is 0.25.

Base conversion 81489731

Base	System	Value
2	Binary	100110110110110111101000011
3	Ternary	12200100002220012
4	Quaternary	10312312331003
5	Quinary	131330132411
6	Senary	12030335135
8	Octal	466667503
10	Decimal	81489731
12	Duodecimal	2335a4ab
16	Hexadecimal	4db6f43
20	Vigesimal	159646b
36	Base36	1cilvn

Cryptographic Hash Functions

md5	0e7124d0d74e05181b43644fb4648832
sha1	c20359b94cddbf332b33df19fff26d53a5516c31
sha256	e41fb7579ec1aea514014a61e9eeb419fdc5eb4ebfbc04d3545cfeb349e96f7c
sha512	8d5f423100e04530074c22a8b7cc6ab5c76c81ef744de3cfe4d68b0db06abf0cdbe345928255872f3ece66e90f48c214fa5c2aea4b276ca8712677207ebf5c3c
ripemd-160	22237b915cb8e2b962058f9f98ad6bd87b6d0458

81489731 as geometric shapes

Circle

Radius = n

Diameter	162979462
Circumference	512015080.50522
Area	2.0861985589157E+16

Sphere

Radius = n

Volume	2.266716791715E+24
Surface area	8.3447942356627E+16
Circumference	512015080.50522

Square

Length = n

Perimeter	325958924
Area	6640576258452361
Diagonal	115243882.77434

Cube

Length = n

Surface area	39843457550714166
Volume	5.4113877298627E+23
Space diagonal	141144354.38712

Equilateral Triangle

Length = n

Perimeter	244469193
Area	2.8754538677938E+15
Altitude	70572177.19356

Triangular Pyramid

Length = n

Surface area	2.8754538677938E+15
Volume	6.377381599026E+22
Height	38414627.591445