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

81872009 (number)

81872009 is an odd 8-digits composite number following 81872008 and preceding 81872010. In scientific notation, it is written as 8.1872009 × 10^7. The sum of its digits is 35. It has a total of 3 prime factors and 8 positive divisors. There are 79274160 positive integers (up to 81872009) that are relatively prime to 81872009.

Interesting facts

81872009 has 8 divisors, whose sum is 84491328
The reverse of 81872009 is 90027818
Previous prime number is 37

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8

Name

Name	eighty-one million eight hundred seventy-two thousand nine

Notation

Scientific notation	8.1872009 × 10^7
Engineering notation	8.1872009 × 10^6

Prime Factorization of 81872009

Prime Factorization 211 × 37 × 10487

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81872009	Product of the distinct prime numbers

The prime factorization of 81872009 is 211 × 37 × 10487. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 4, 54, 41, 72, 755, 4284, 3197, 73730, 25041, 100138, 44466, 5342898, 6124380, 80653373, 97848010, 584600582, 543847618, 4694022039, 3055132465

Basic calculations (n = 81872009)

Multiplication

n×y

n×2	163744018
n×3	245616027
n×4	327488036
n×5	409360045

Division

n÷y

n÷2	40936004.5
n÷3	27290669.666667
n÷3	20468002.25
n÷5	16374401.8

Exponentiation

n^y

n²	6703025857696081
n³	5.4879019334853E+23
n⁴	4.4930555648942E+31
n⁵	3.6785548564652E+39

Nth Root

^y√n

²√n	9048.3152575493
³√n	434.22199244279
⁴√n	95.12263273033
⁵√n	38.249616879147

Divisors of 81872009

1, 37, 211, 7807, 10487, 388019, 2212757, 81872009

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	-81872008	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 81872009 can be divided by 8 positive divisors. The sum of these divisors (counting 81872009) is 1, the average is 0.125.

Base conversion 81872009

Base	System	Value
2	Binary	100111000010100010010001001
3	Ternary	12201001112021122
4	Quaternary	10320110102021
5	Quinary	131424401014
6	Senary	12042445025
8	Octal	470242211
10	Decimal	81872009
12	Duodecimal	23503775
16	Hexadecimal	4e14489
20	Vigesimal	15be009
36	Base36	1cqsuh

Cryptographic Hash Functions

md5	ea720fa7cb195c1b07356c36775951fc
sha1	7b23665aa69cd71ab1bd469b938a4cdb40372b50
sha256	48e7f86b8b380cd9fdcd0b60137ec82c568d26dd7813d36d7598d13e63c64864
sha512	c40cfbe337627cdbe6a0b1cd90ab73d0b0734af70a5d2360c2eaf110f7fdc30087ea88a46b7ee01e7f448948db0afa738fbbf4f10039a3ac57819c44bd46ca70
ripemd-160	1b723b3c6a78cc9bc18b02e5ef27233438f11ca4

81872009 as geometric shapes

Circle

Radius = n

Diameter	163744018
Circumference	514417004.01807
Area	2.105817679136E+16

Sphere

Radius = n

Volume	2.2987669863811E+24
Surface area	8.4232707165442E+16
Circumference	514417004.01807

Square

Length = n

Perimeter	327488036
Area	6703025857696081
Diagonal	115784505.50653

Cube

Length = n

Surface area	40218155146176486
Volume	5.4879019334853E+23
Space diagonal	141806479.30574

Equilateral Triangle

Length = n

Perimeter	245616027
Area	2.9024953374944E+15
Altitude	70903239.652868

Triangular Pyramid

Length = n

Surface area	2.9024953374944E+15
Volume	6.467554452757E+22
Height	38594835.168844