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

81815072 (number)

81815072 is an even 8-digits composite number following 81815071 and preceding 81815073. In scientific notation, it is written as 8.1815072 × 10^7. The sum of its digits is 32. It has a total of 7 prime factors and 24 positive divisors. There are 40855104 positive integers (up to 81815072) that are relatively prime to 81815072.

Interesting facts

81815072 has 24 divisors, whose sum is 161280000
The reverse of 81815072 is 27051818
Previous prime number is 1999

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5

Name

Name	eighty-one million eight hundred fifteen thousand seventy-two

Notation

Scientific notation	8.1815072 × 10^7
Engineering notation	8.1815072 × 10^6

Prime Factorization of 81815072

Prime Factorization 2 × 2 × 2 × 2 × 2 × 1999 × 1279

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	7	Total number of prime factors
rad	Radical	5113442	Product of the distinct prime numbers

The prime factorization of 81815072 is 2 × 2 × 2 × 2 × 2 × 1999 × 1279. Since it has a total of 7 prime factors.

Most popular turbo-numbers

5, 6, 77, 4, 806, 94, 9674, 5941, 74317, 43434, 29092, 539386, 1929636, 6030561, 15237560, 90055747, 543649794, 745747270, 7143861215, 310683218

Basic calculations (n = 81815072)

Multiplication

n×y

n×2	163630144
n×3	245445216
n×4	327260288
n×5	409075360

Division

n÷y

n÷2	40907536
n÷3	27271690.666667
n÷3	20453768
n÷5	16363014.4

Exponentiation

n^y

n²	6693706006365184
n³	5.476460388576E+23
n⁴	4.4805700099649E+31
n⁵	3.6657815796632E+39

Nth Root

^y√n

²√n	9045.1684340315
³√n	434.12131077602
⁴√n	95.106090415028
⁵√n	38.244295342442

Divisors of 81815072

1, 2, 4, 8, 16, 32, 1279, 1999, 2558, 3998, 5116, 7996, 10232, 15992, 20464, 31984, 40928, 63968, 2556721, 5113442, 10226884, 20453768, 40907536, 81815072

24 divisors

τ	Total Divisors	24	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81815071	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.041666666666667	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	24	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81815072 can be divided by 24 positive divisors. The sum of these divisors (counting 81815072) is 1, the average is 0.041666666666667.

Base conversion 81815072

Base	System	Value
2	Binary	100111000000110011000100000
3	Ternary	12200221122011212
4	Quaternary	10320012120200
5	Quinary	131421040242
6	Senary	12041325252
8	Octal	470063040
10	Decimal	81815072
12	Duodecimal	23496828
16	Hexadecimal	4e06620
20	Vigesimal	15b6hdc
36	Base36	1cpkww

Cryptographic Hash Functions

md5	737a97b36a5e0ded47944eada2ec3edd
sha1	cccd744ccf559de8ae7302a1838cdda39d163718
sha256	3e644371db7dc3ea6a513eb593f637e81486f84a738e688b65b807c10a2865da
sha512	a740b387757c4a0105236ae13f3b7ca740294e23d33dc83b24e802ba1b820c1fe48b90ca82d57dba7de79140423d567eb90ac0526f05cd49a24e9c96a550b775
ripemd-160	f8f58bd7152d15178b2f955244b11fa236142720

81815072 as geometric shapes

Circle

Radius = n

Diameter	163630144
Circumference	514059258.29624
Area	2.1028897614887E+16

Sphere

Radius = n

Volume	2.2939743632568E+24
Surface area	8.4115590459547E+16
Circumference	514059258.29624

Square

Length = n

Perimeter	327260288
Area	6693706006365184
Diagonal	115703984.42893

Cube

Length = n

Surface area	40162236038191104
Volume	5.476460388576E+23
Space diagonal	141707861.52891

Equilateral Triangle

Length = n

Perimeter	245445216
Area	2.8984597234884E+15
Altitude	70853930.764453

Triangular Pyramid

Length = n

Surface area	2.8984597234884E+15
Volume	6.4540704627693E+22
Height	38567994.809644