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

81431421 (number)

81431421 is an odd 8-digits composite number following 81431420 and preceding 81431422. In scientific notation, it is written as 8.1431421 × 10^7. The sum of its digits is 24. It has a total of 2 prime factors and 4 positive divisors. There are 54287612 positive integers (up to 81431421) that are relatively prime to 81431421.

Interesting facts

81431421 has 4 divisors, whose sum is 108575232
The reverse of 81431421 is 12413418
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6

Name

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

Notation

Scientific notation	8.1431421 × 10^7
Engineering notation	8.1431421 × 10^6

Prime Factorization of 81431421

Prime Factorization 3 × 27143807

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81431421	Product of the distinct prime numbers

The prime factorization of 81431421 is 3 × 27143807. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 3, 81, 78, 37, 44, 4235, 8004, 21116, 45898, 114144, 682557, 7759216, 6492334, 2963462, 20214139, 892885576, 667057990, 1047941163, 8743612502

Basic calculations (n = 81431421)

Multiplication

n×y

n×2	162862842
n×3	244294263
n×4	325725684
n×5	407157105

Division

n÷y

n÷2	40715710.5
n÷3	27143807
n÷3	20357855.25
n÷5	16286284.2

Exponentiation

n^y

n²	6631076326079241
n³	5.3997796799209E+23
n⁴	4.3971173242289E+31
n⁵	3.5806351201567E+39

Nth Root

^y√n

²√n	9023.9360037624
³√n	433.44168013976
⁴√n	94.994399854741
⁵√n	38.208360494268

Divisors of 81431421

1, 3, 27143807, 81431421

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	-81431420	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 81431421 can be divided by 4 positive divisors. The sum of these divisors (counting 81431421) is 1, the average is 0.25.

Base conversion 81431421

Base	System	Value
2	Binary	100110110101000101101111101
3	Ternary	12200020010220120
4	Quaternary	10312220231331
5	Quinary	131321301141
6	Senary	12025205153
8	Octal	466505575
10	Decimal	81431421
12	Duodecimal	233307b9
16	Hexadecimal	4da8b7d
20	Vigesimal	158iib1
36	Base36	1chcvx

Cryptographic Hash Functions

md5	13ebfca3294adcc5a5bca67a64bbe25a
sha1	8e11a6b34b7c9695399de7f6dfaa465202f0a86d
sha256	2f80c79a36751cc8a7a990608fe55c0122653e28f606a04d4169236f332acc0d
sha512	2a5892e198077e996e13a13b56a8ce8de67c2e19a2439283205f00a6aee46c43ef9da078ea425e1ed4cdf684842d3532108d8131bf19d2b2a375092a7fd8c001
ripemd-160	5eb9515d8a64b9c65bd31797a5e31ab7e0d91a87

81431421 as geometric shapes

Circle

Radius = n

Diameter	162862842
Circumference	511648707.96996
Area	2.0832140671404E+16

Sphere

Radius = n

Volume	2.2618544231257E+24
Surface area	8.3328562685615E+16
Circumference	511648707.96996

Square

Length = n

Perimeter	325725684
Area	6631076326079241
Diagonal	115161419.98151

Cube

Length = n

Surface area	39786457956475446
Volume	5.3997796799209E+23
Space diagonal	141043358.50453

Equilateral Triangle

Length = n

Perimeter	244294263
Area	2.8713402764091E+15
Altitude	70521679.252266

Triangular Pyramid

Length = n

Surface area	2.8713402764091E+15
Volume	6.3637013809757E+22
Height	38387139.993838