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

81279421 (number)

81279421 is an odd 8-digits composite number following 81279420 and preceding 81279422. In scientific notation, it is written as 8.1279421 × 10^7. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 81178144 positive integers (up to 81279421) that are relatively prime to 81279421.

Interesting facts

81279421 has 4 divisors, whose sum is 81380700
The reverse of 81279421 is 12497218
Previous prime number is 809

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7

Name

Name	eighty-one million two hundred seventy-nine thousand four hundred twenty-one

Notation

Scientific notation	8.1279421 × 10^7
Engineering notation	8.1279421 × 10^6

Prime Factorization of 81279421

Prime Factorization 809 × 100469

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81279421	Product of the distinct prime numbers

The prime factorization of 81279421 is 809 × 100469. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 5, 40, 43, 12, 211, 8225, 4842, 10566, 25565, 144033, 536787, 8060304, 465074, 92008200, 30071661, 747677443, 440173091, 367396779, 648827676

Basic calculations (n = 81279421)

Multiplication

n×y

n×2	162558842
n×3	243838263
n×4	325117684
n×5	406397105

Division

n÷y

n÷2	40639710.5
n÷3	27093140.333333
n÷3	20319855.25
n÷5	16255884.2

Exponentiation

n^y

n²	6606344278095241
n³	5.3695983785024E+23
n⁴	4.3643784720722E+31
n⁵	3.5473415523489E+39

Nth Root

^y√n

²√n	9015.5100243968
³√n	433.17182455801
⁴√n	94.950039622935
⁵√n	38.194085876856

Divisors of 81279421

1, 809, 100469, 81279421

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	-81279420	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 81279421 can be divided by 4 positive divisors. The sum of these divisors (counting 81279421) is 1, the average is 0.25.

Base conversion 81279421

Base	System	Value
2	Binary	100110110000011100110111101
3	Ternary	12122221102101221
4	Quaternary	10312003212331
5	Quinary	131301420141
6	Senary	12022033341
8	Octal	466034675
10	Decimal	81279421
12	Duodecimal	23278851
16	Hexadecimal	4d839bd
20	Vigesimal	157jib1
36	Base36	1ce3lp

Cryptographic Hash Functions

md5	005b32a4ec1a85c6081291b4c1164a64
sha1	88e9e3dead4f16358c7ffd9828b250ac78782126
sha256	89776e61a76c856a7ba28cc4f18545368a7284e9da99878521df10b5f9eb0a51
sha512	713dcb00b90a01c40058649a744ce3ecfb7bb31a696a25c9a387b9993f10f7b90b37b98e95ca62583ddc2a9da4711ec29db0505243425d42250452f9f40a5cda
ripemd-160	fc3a7fe13abf4f6778077fdb3e0f99559d37bbc8

81279421 as geometric shapes

Circle

Radius = n

Diameter	162558842
Circumference	510693663.80326
Area	2.0754442651149E+16

Sphere

Radius = n

Volume	2.2492121091508E+24
Surface area	8.3017770604596E+16
Circumference	510693663.80326

Square

Length = n

Perimeter	325117684
Area	6606344278095241
Diagonal	114946459.52003

Cube

Length = n

Surface area	39638065668571446
Volume	5.3695983785024E+23
Space diagonal	140780086.78178

Equilateral Triangle

Length = n

Perimeter	243838263
Area	2.8606309854882E+15
Altitude	70390043.39089

Triangular Pyramid

Length = n

Surface area	2.8606309854882E+15
Volume	6.3281323761456E+22
Height	38315486.506678