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

81782021 (number)

81782021 is an odd 8-digits composite number following 81782020 and preceding 81782022. In scientific notation, it is written as 8.1782021 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 78529360 positive integers (up to 81782021) that are relatively prime to 81782021.

Interesting facts

81782021 has 8 divisors, whose sum is 85100544
The reverse of 81782021 is 12028718
Previous prime number is 53

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

Name	eighty-one million seven hundred eighty-two thousand twenty-one

Notation

Scientific notation	8.1782021 × 10^7
Engineering notation	8.1782021 × 10^6

Prime Factorization of 81782021

Prime Factorization 47 × 53 × 32831

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81782021	Product of the distinct prime numbers

The prime factorization of 81782021 is 47 × 53 × 32831. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 8, 52, 15, 965, 908, 6571, 6294, 89202, 89208, 252591, 291446, 1810581, 9858233, 66713289, 20928424, 385030171, 657445712, 7270583997, 8887422053

Basic calculations (n = 81782021)

Multiplication

n×y

n×2	163564042
n×3	245346063
n×4	327128084
n×5	408910105

Division

n÷y

n÷2	40891010.5
n÷3	27260673.666667
n÷3	20445505.25
n÷5	16356404.2

Exponentiation

n^y

n²	6688298958844441
n³	5.4698260590649E+23
n⁴	4.473334296288E+31
n⁵	3.6583831935904E+39

Nth Root

^y√n

²√n	9043.3412519931
³√n	434.06284528139
⁴√n	95.096483909728
⁵√n	38.241204917966

Divisors of 81782021

1, 47, 53, 2491, 32831, 1543057, 1740043, 81782021

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	-81782020	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 81782021 can be divided by 8 positive divisors. The sum of these divisors (counting 81782021) is 1, the average is 0.125.

Base conversion 81782021

Base	System	Value
2	Binary	100110111111110010100000101
3	Ternary	12200212221211202
4	Quaternary	10313332110011
5	Quinary	131414011041
6	Senary	12040512245
8	Octal	467762405
10	Decimal	81782021
12	Duodecimal	2347b685
16	Hexadecimal	4dfe505
20	Vigesimal	15b2f11
36	Base36	1covet

Cryptographic Hash Functions

md5	3b5b82556fbf4020b3f78be403f41cb1
sha1	696b63ff869f19654aef42917720b33d3f230a71
sha256	79878f7cd05d751c04c84d7c49cf367650676c740a979ee67fc3f58f35faa949
sha512	8b6a1a31b816d40590a2741e5ba8bb1a066bc43099f0e51044723e056a07db9f6d6d638f29b8921225b7876c65a5f200541c78f73f4282ee7aee8f0f68992aac
ripemd-160	4e4560549c61374aa2948eb52760623610b36120

81782021 as geometric shapes

Circle

Radius = n

Diameter	163564042
Circumference	513851592.73865
Area	2.1011910874118E+16

Sphere

Radius = n

Volume	2.2911953818097E+24
Surface area	8.4047643496472E+16
Circumference	513851592.73865

Square

Length = n

Perimeter	327128084
Area	6688298958844441
Diagonal	115657243.25648

Cube

Length = n

Surface area	40129793753066646
Volume	5.4698260590649E+23
Space diagonal	141650615.51766

Equilateral Triangle

Length = n

Perimeter	245346063
Area	2.8961184032321E+15
Altitude	70825307.758832

Triangular Pyramid

Length = n

Surface area	2.8961184032321E+15
Volume	6.4462518304595E+22
Height	38552414.418827