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

81749809 (number)

81749809 is an odd 8-digits prime number following 81749808 and preceding 81749810. In scientific notation, it is written as 8.1749809 × 10^7. The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors. There are 81749808 positive integers (up to 81749809) that are relatively prime to 81749809.

Interesting facts

81749809 has 2 divisors, whose sum is 81749810
The reverse of 81749809 is 90894718
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1

Name

Name	eighty-one million seven hundred forty-nine thousand eight hundred nine

Notation

Scientific notation	8.1749809 × 10^7
Engineering notation	8.1749809 × 10^6

Prime Factorization of 81749809

Prime Factorization 81749809

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81749809	Product of the distinct prime numbers

The prime factorization of 81749809 is 81749809. Since it has a total of 1 prime factors.

Most popular turbo-numbers

8, 6, 44, 2, 1000, 519, 5364, 7968, 38339, 80153, 688844, 54825, 8668068, 306804, 88777250, 26314758, 141069592, 655189282, 7891861516, 9840407223

Basic calculations (n = 81749809)

Multiplication

n×y

n×2	163499618
n×3	245249427
n×4	326999236
n×5	408749045

Division

n÷y

n÷2	40874904.5
n÷3	27249936.333333
n÷3	20437452.25
n÷5	16349961.8

Exponentiation

n^y

n²	6683031271536481
n³	5.4633652998913E+23
n⁴	4.4662906976335E+31
n⁵	3.6511841147001E+39

Nth Root

^y√n

²√n	9041.5600976823
³√n	434.00584877477
⁴√n	95.08711846345
⁵√n	38.238191982363

Divisors of 81749809

1, 81749809

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81749810	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40874905	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9041.5601529824	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999755351	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749809 can be divided by 2 positive divisors. The sum of these divisors (counting 81749809) is 81749810, the average is 40874905.

Base conversion 81749809

Base	System	Value
2	Binary	100110111110110011100110001
3	Ternary	12200211022122201
4	Quaternary	10313312130301
5	Quinary	131411443214
6	Senary	12040103201
8	Octal	467663461
10	Decimal	81749809
12	Duodecimal	23464b01
16	Hexadecimal	4df6731
20	Vigesimal	15aiea9
36	Base36	1co6k1

Cryptographic Hash Functions

md5	5cd072cee097d396e28b564852348ab4
sha1	640dc91a571aa3b937448a24af9ca17ea574572d
sha256	b99969a3bd3be7a0103130b0f43dd59e7b38d657a08254f47735326c8450794b
sha512	4c2d81e12287c62e529cc559df3ac79c2c581c8b9b49eb4fef7f48a1bf649868dbb3ff41e342ffb41e3fb56c87c860076b1b141abf4bb58081c67a3034d843d0
ripemd-160	87345e64bf10f215c3e33e4fdcb527ae334b7e43

81749809 as geometric shapes

Circle

Radius = n

Diameter	163499618
Circumference	513649198.77354
Area	2.099536194637E+16

Sphere

Radius = n

Volume	2.2884891053355E+24
Surface area	8.3981447785479E+16
Circumference	513649198.77354

Square

Length = n

Perimeter	326999236
Area	6683031271536481
Diagonal	115611688.60921

Cube

Length = n

Surface area	40098187629218886
Volume	5.4633652998913E+23
Space diagonal	141594822.69705

Equilateral Triangle

Length = n

Perimeter	245249427
Area	2.8938374277182E+15
Altitude	70797411.348526

Triangular Pyramid

Length = n

Surface area	2.8938374277182E+15
Volume	6.4386377527541E+22
Height	38537229.536403