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

81121405 (number)

81121405 is an odd 8-digits composite number following 81121404 and preceding 81121406. In scientific notation, it is written as 8.1121405 × 10^7. The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors. There are 63982800 positive integers (up to 81121405) that are relatively prime to 81121405.

Interesting facts

81121405 has 8 divisors, whose sum is 98717184
The reverse of 81121405 is 50412118
Previous prime number is 71

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4

Name

Name	eighty-one million one hundred twenty-one thousand four hundred five

Notation

Scientific notation	8.1121405 × 10^7
Engineering notation	8.1121405 × 10^6

Prime Factorization of 81121405

Prime Factorization 5 × 71 × 228511

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81121405	Product of the distinct prime numbers

The prime factorization of 81121405 is 5 × 71 × 228511. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 4, 76, 1, 32, 263, 3232, 8353, 83097, 27269, 209494, 971436, 7110234, 5491069, 30384174, 35744133, 770829161, 829290442, 9475050329, 6554935381

Basic calculations (n = 81121405)

Multiplication

n×y

n×2	162242810
n×3	243364215
n×4	324485620
n×5	405607025

Division

n÷y

n÷2	40560702.5
n÷3	27040468.333333
n÷3	20280351.25
n÷5	16224281

Exponentiation

n^y

n²	6580682349174025
n³	5.338341980237E+23
n⁴	4.3305380180731E+31
n⁵	3.51299328432E+39

Nth Root

^y√n

²√n	9006.7421968212
³√n	432.89093146525
⁴√n	94.903857649841
⁵√n	38.179223626672

Divisors of 81121405

1, 5, 71, 355, 228511, 1142555, 16224281, 81121405

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	-81121404	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 81121405 can be divided by 8 positive divisors. The sum of these divisors (counting 81121405) is 1, the average is 0.125.

Base conversion 81121405

Base	System	Value
2	Binary	100110101011101000001111101
3	Ternary	12122122101122111
4	Quaternary	10311131001331
5	Quinary	131231341110
6	Senary	12014414021
8	Octal	465350175
10	Decimal	81121405
12	Duodecimal	23201311
16	Hexadecimal	4d5d07d
20	Vigesimal	15703a5
36	Base36	1capod

Cryptographic Hash Functions

md5	ac3e7b6861f5a0988393c95d6806d26b
sha1	9cad013eb0e10c2e0d1ae1fcdd18e4a967a8838f
sha256	df0d0394c03762b6af285112d005f89c2d4433e79a55ab320f557a7bc5802bfd
sha512	748e992481cceaa3010d543338c6e9a8f6e650212d29907b55f0d0fa5387e58b86f609fa14fccc2f48acc5e6cfc2a316eeaf195c95517be4b613c47c5397f9d0
ripemd-160	0ffd16f669158f2511f1d476371284e11716ebde

81121405 as geometric shapes

Circle

Radius = n

Diameter	162242810
Circumference	509700819.99376
Area	2.0673823323773E+16

Sphere

Radius = n

Volume	2.2361194596617E+24
Surface area	8.2695293295093E+16
Circumference	509700819.99376

Square

Length = n

Perimeter	324485620
Area	6580682349174025
Diagonal	114722991.14976

Cube

Length = n

Surface area	39484094095044150
Volume	5.338341980237E+23
Space diagonal	140506395.04137

Equilateral Triangle

Length = n

Perimeter	243364215
Area	2.8495190443103E+15
Altitude	70253197.520686

Triangular Pyramid

Length = n

Surface area	2.8495190443103E+15
Volume	6.2912963575306E+22
Height	38240997.04992