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

81128521 (number)

81128521 is an odd 8-digits composite number following 81128520 and preceding 81128522. In scientific notation, it is written as 8.1128521 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 77601172 positive integers (up to 81128521) that are relatively prime to 81128521.

Interesting facts

81128521 has 4 divisors, whose sum is 84655872
The reverse of 81128521 is 12582118
Previous prime number is 23

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	eighty-one million one hundred twenty-eight thousand five hundred twenty-one

Notation

Scientific notation	8.1128521 × 10^7
Engineering notation	8.1128521 × 10^6

Prime Factorization of 81128521

Prime Factorization 23 × 3527327

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81128521	Product of the distinct prime numbers

The prime factorization of 81128521 is 23 × 3527327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 10, 21, 83, 950, 166, 3263, 7642, 34819, 62048, 568457, 259919, 599256, 7627355, 83557834, 59513021, 655512999, 583252655, 3525804561, 3575780323

Basic calculations (n = 81128521)

Multiplication

n×y

n×2	162257042
n×3	243385563
n×4	324514084
n×5	405642605

Division

n÷y

n÷2	40564260.5
n÷3	27042840.333333
n÷3	20282130.25
n÷5	16225704.2

Exponentiation

n^y

n²	6581836919647441
n³	5.3397469475419E+23
n⁴	4.3320577236834E+31
n⁵	3.5145343600906E+39

Nth Root

^y√n

²√n	9007.1372255562
³√n	432.90358887998
⁴√n	94.905938831857
⁵√n	38.179893422327

Divisors of 81128521

1, 23, 3527327, 81128521

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	-81128520	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 81128521 can be divided by 4 positive divisors. The sum of these divisors (counting 81128521) is 1, the average is 0.25.

Base conversion 81128521

Base	System	Value
2	Binary	100110101011110110001001001
3	Ternary	12122122202102001
4	Quaternary	10311132301021
5	Quinary	131232103041
6	Senary	12014511001
8	Octal	465366111
10	Decimal	81128521
12	Duodecimal	23205461
16	Hexadecimal	4d5ec49
20	Vigesimal	1571161
36	Base36	1cav61

Cryptographic Hash Functions

md5	3aa0efa10a3fd19c05fadb2c4f87e991
sha1	673e3125e2e94123b3c4507917a7e2363f10f7bd
sha256	789ed394c34d6529bcd7690f1fe15a20065b5fa546d25ba44f2bdf8a3bac3b38
sha512	67fac35093ae08d77c854769494b364f64ccd4c771fea2579f8a40a6bc77ad346db5688844e6f495bcf898162c3677d36ca0fdc5fb635f2c4c14f46ff38ea217
ripemd-160	e9982f282f228ba4e125e8bbc7bfa1b6856f8a41

81128521 as geometric shapes

Circle

Radius = n

Diameter	162257042
Circumference	509745531.14041
Area	2.067745051389E+16

Sphere

Radius = n

Volume	2.2367079709902E+24
Surface area	8.2709802055562E+16
Circumference	509745531.14041

Square

Length = n

Perimeter	324514084
Area	6581836919647441
Diagonal	114733054.69347

Cube

Length = n

Surface area	39491021517884646
Volume	5.3397469475419E+23
Space diagonal	140518720.31492

Equilateral Triangle

Length = n

Perimeter	243385563
Area	2.8500189879905E+15
Altitude	70259360.157459

Triangular Pyramid

Length = n

Surface area	2.8500189879905E+15
Volume	6.2929521273784E+22
Height	38244351.56449