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

81509966 (number)

81509966 is an even 8-digits composite number following 81509965 and preceding 81509967. In scientific notation, it is written as 8.1509966 × 10^7. The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors. There are 40643568 positive integers (up to 81509966) that are relatively prime to 81509966.

Interesting facts

81509966 has 8 divisors, whose sum is 122599200
The reverse of 81509966 is 66990518
Previous prime number is 367

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 44
Digital Root 8

Name

Name	eighty-one million five hundred nine thousand nine hundred sixty-six

Notation

Scientific notation	8.1509966 × 10^7
Engineering notation	8.1509966 × 10^6

Prime Factorization of 81509966

Prime Factorization 2 × 367 × 111049

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81509966	Product of the distinct prime numbers

The prime factorization of 81509966 is 2 × 367 × 111049. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 7, 67, 90, 624, 478, 3676, 6348, 58218, 45812, 67419, 86681, 7099157, 8144886, 77310966, 85877526, 406373589, 772241003, 1437653600, 8263412658

Basic calculations (n = 81509966)

Multiplication

n×y

n×2	163019932
n×3	244529898
n×4	326039864
n×5	407549830

Division

n÷y

n÷2	40754983
n÷3	27169988.666667
n÷3	20377491.5
n÷5	16301993.2

Exponentiation

n^y

n²	6643874557321156
n³	5.4154198927551E+23
n⁴	4.4141069133419E+31
n⁵	3.5979370442687E+39

Nth Root

^y√n

²√n	9028.2869914508
³√n	433.58099465429
⁴√n	95.017298380089
⁵√n	38.215728457219

Divisors of 81509966

1, 2, 367, 734, 111049, 222098, 40754983, 81509966

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	-81509965	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 81509966 can be divided by 8 positive divisors. The sum of these divisors (counting 81509966) is 1, the average is 0.125.

Base conversion 81509966

Base	System	Value
2	Binary	100110110111011111001001110
3	Ternary	12200101010122122
4	Quaternary	10312323321032
5	Quinary	131331304331
6	Senary	12031012542
8	Octal	466737116
10	Decimal	81509966
12	Duodecimal	2336a152
16	Hexadecimal	4dbbe4e
20	Vigesimal	1598ei6
36	Base36	1cj1hq

Cryptographic Hash Functions

md5	c8a2a6ce7aed2aa8d2ea6bd7a33152c9
sha1	915059c8f3fedf0ac04602977f7427808ebb3adb
sha256	64f38efb6f2970cce56e8793f429feb930190f7b27f4256178fb645bb2766a5e
sha512	039ad29f6a1bc69bf1ef96eb7b76d26552925e688ce8d93c89dbf2d708aedecf3c1615e7131f172002176aa56e4759707b93b140adf89b34f3fb3f91c43b36a3
ripemd-160	f763a627c01b144aaafc916d8661628204b826a5

81509966 as geometric shapes

Circle

Radius = n

Diameter	163019932
Circumference	512142220.75991
Area	2.0872347500652E+16

Sphere

Radius = n

Volume	2.2684057801578E+24
Surface area	8.3489390002609E+16
Circumference	512142220.75991

Square

Length = n

Perimeter	326039864
Area	6643874557321156
Diagonal	115272499.38577

Cube

Length = n

Surface area	39863247343926936
Volume	5.4154198927551E+23
Space diagonal	141179402.43521

Equilateral Triangle

Length = n

Perimeter	244529898
Area	2.8768820730986E+15
Altitude	70589701.217606

Triangular Pyramid

Length = n

Surface area	2.8768820730986E+15
Volume	6.3821335485661E+22
Height	38424166.461923