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

81427881 (number)

81427881 is an odd 8-digits composite number following 81427880 and preceding 81427882. In scientific notation, it is written as 8.1427881 × 10^7. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 54285252 positive integers (up to 81427881) that are relatively prime to 81427881.

Interesting facts

81427881 has 4 divisors, whose sum is 108570512
The reverse of 81427881 is 18872418
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	eighty-one million four hundred twenty-seven thousand eight hundred eighty-one

Notation

Scientific notation	8.1427881 × 10^7
Engineering notation	8.1427881 × 10^6

Prime Factorization of 81427881

Prime Factorization 3 × 27142627

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81427881	Product of the distinct prime numbers

The prime factorization of 81427881 is 3 × 27142627. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 2, 86, 68, 668, 53, 6722, 6189, 28503, 42454, 851579, 406655, 9705742, 8841842, 59508571, 20646710, 645091157, 877682219, 2016081137, 9926138786

Basic calculations (n = 81427881)

Multiplication

n×y

n×2	162855762
n×3	244283643
n×4	325711524
n×5	407139405

Division

n÷y

n÷2	40713940.5
n÷3	27142627
n÷3	20356970.25
n÷5	16285576.2

Exponentiation

n^y

n²	6630499804150161
n³	5.3990754902286E+23
n⁴	4.3963527652835E+31
n⁵	3.5798568980553E+39

Nth Root

^y√n

²√n	9023.7398566226
³√n	433.4353991663
⁴√n	94.993367434904
⁵√n	38.208028288477

Divisors of 81427881

1, 3, 27142627, 81427881

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	-81427880	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 81427881 can be divided by 4 positive divisors. The sum of these divisors (counting 81427881) is 1, the average is 0.25.

Base conversion 81427881

Base	System	Value
2	Binary	100110110100111110110101001
3	Ternary	12200012222001110
4	Quaternary	10312213312221
5	Quinary	131321143011
6	Senary	12025140533
8	Octal	466476651
10	Decimal	81427881
12	Duodecimal	2332a749
16	Hexadecimal	4da7da9
20	Vigesimal	158i9e1
36	Base36	1cha5l

Cryptographic Hash Functions

md5	063dd474fdf15891a65b9804ace6dced
sha1	7d229651a1f0ba147dbab236be2fcde80d211dfa
sha256	35aa493e3639f1c9eb16bff5217367a32491353b6f249ada4e0416280464296b
sha512	003d0a29ae1f390f92f6fb11d7ea6a3905b498f35ee1905fcb549750725b97135c73abafb53b91204087bd0c59541ba961a3c070a4292db582f2fb10ae1b6a29
ripemd-160	8860fefce52e164b44eac1519ccdf16a62c72ed7

81427881 as geometric shapes

Circle

Radius = n

Diameter	162855762
Circumference	511626465.49397
Area	2.0830329474347E+16

Sphere

Radius = n

Volume	2.2615594528372E+24
Surface area	8.3321317897387E+16
Circumference	511626465.49397

Square

Length = n

Perimeter	325711524
Area	6630499804150161
Diagonal	115156413.6655

Cube

Length = n

Surface area	39782998824900966
Volume	5.3990754902286E+23
Space diagonal	141037227.04467

Equilateral Triangle

Length = n

Perimeter	244283643
Area	2.8710906350909E+15
Altitude	70518613.522336

Triangular Pyramid

Length = n

Surface area	2.8710906350909E+15
Volume	6.3628714854646E+22
Height	38385471.221834