81521640, eighty-one million five hundred twenty-one thousand six hundred forty: Prime Factorization, Divisors, Base conversion, Basic calculations, Geometric Shapes

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

Interesting facts

81521640 has 48 divisors, whose sum is 222449760
The reverse of 81521640 is 04612518
Previous prime number is 135

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 27
Digital Root 9

Name

Name	eighty-one million five hundred twenty-one thousand six hundred forty

Notation

Scientific notation	8.1521640 × 10^7
Engineering notation	8.1521640 × 10^6

Prime Factorization of 81521640

Prime Factorization 2 × 2 × 2 × 3 × 3 × 135 × 8387

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	7	Total number of prime factors
rad	Radical	6793470	Product of the distinct prime numbers

The prime factorization of 81521640 is 2 × 2 × 2 × 3 × 3 × 135 × 8387. Since it has a total of 7 prime factors.

Most popular turbo-numbers

2, 10, 74, 50, 921, 798, 5435, 131, 47241, 80250, 226099, 87903, 1311742, 6105078, 54341155, 71076928, 977691691, 141441483, 8789297835, 616779766

Basic calculations (n = 81521640)

Multiplication

n×y

n×2	163043280
n×3	244564920
n×4	326086560
n×5	407608200

Division

n÷y

n÷2	40760820
n÷3	27173880
n÷3	20380410
n÷5	16304328

Exponentiation

n^y

n²	6645777788289600
n³	5.4177470437694E+23
n⁴	4.4166362411323E+31
n⁵	3.6005142966054E+39

Nth Root

^y√n

²√n	9028.9334918361
³√n	433.60169307582
⁴√n	95.020700333328
⁵√n	38.216823059216

Divisors of 81521640

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 135, 270, 405, 540, 810, 1080, 1215, 1620, 2430, 3240, 4860, 8387, 9720, 16774, 25161, 33548, 50322, 67096, 75483, 100644, 150966, 201288, 301932, 603864, 1132245, 2264490, 3396735, 4528980, 6793470, 9057960, 10190205, 13586940, 20380410, 27173880, 40760820, 81521640

48 divisors

τ	Total Divisors	48	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81521639	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.020833333333333	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	48	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81521640 can be divided by 48 positive divisors. The sum of these divisors (counting 81521640) is 1, the average is 0.020833333333333.

Base conversion 81521640

Base	System	Value
2	Binary	100110110111110101111101000
3	Ternary	12200101201200000
4	Quaternary	10312332233220
5	Quinary	131332143030
6	Senary	12031143000
8	Octal	466765750
10	Decimal	81521640
12	Duodecimal	23374a60
16	Hexadecimal	4dbebe8
20	Vigesimal	159a420
36	Base36	1cjai0

Cryptographic Hash Functions

md5	5f0c7b14069ccdf9bc8bf5d4525d3c47
sha1	01d3a378b8143bbb00b6321270acbe0316c0be92
sha256	f7abdae8df90c344b2dd0a13ffc333c26a68f126f863757f3bfb8f82f9db2327
sha512	f76d61f3b74114786a5296861c69624d9821a24bdf473fb9f6b4b26f363bbaea4edaffe5c9e586bbf103cd08180ce04fc35b125ad65902f63c7e3beb40d37ed5
ripemd-160	d072c58eabab192bf0765e2199614c180f5778fd

81521640 as geometric shapes

Circle

Radius = n

Diameter	163043280
Circumference	512215570.66518
Area	2.0878326677081E+16

Sphere

Radius = n

Volume	2.2693805748952E+24
Surface area	8.3513306708323E+16
Circumference	512215570.66518

Square

Length = n

Perimeter	326086560
Area	6645777788289600
Diagonal	115289008.9149

Cube

Length = n

Surface area	39874666729737600
Volume	5.4177470437694E+23
Space diagonal	141199622.39634

Equilateral Triangle

Length = n

Perimeter	244564920
Area	2.8777061962826E+15
Altitude	70599811.19817

Triangular Pyramid

Length = n

Surface area	2.8777061962826E+15
Volume	6.3848761223379E+22
Height	38429669.638299