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

81968081 (number)

81968081 is an odd 8-digits composite number following 81968080 and preceding 81968082. In scientific notation, it is written as 8.1968081 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 75662832 positive integers (up to 81968081) that are relatively prime to 81968081.

Interesting facts

81968081 has 4 divisors, whose sum is 88273332
The reverse of 81968081 is 18086918
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

Name	eighty-one million nine hundred sixty-eight thousand eighty-one

Notation

Scientific notation	8.1968081 × 10^7
Engineering notation	8.1968081 × 10^6

Prime Factorization of 81968081

Prime Factorization 13 × 6305237

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81968081	Product of the distinct prime numbers

The prime factorization of 81968081 is 13 × 6305237. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 7, 61, 59, 476, 572, 2494, 7725, 86071, 71242, 476255, 471047, 9513879, 2758690, 72779153, 71990320, 609744297, 844938252, 1086331277, 6680032475

Basic calculations (n = 81968081)

Multiplication

n×y

n×2	163936162
n×3	245904243
n×4	327872324
n×5	409840405

Division

n÷y

n÷2	40984040.5
n÷3	27322693.666667
n÷3	20492020.25
n÷5	16393616.2

Exponentiation

n^y

n²	6718766302822561
n³	5.5072438052983E+23
n⁴	4.5141820631944E+31
n⁵	3.7001884100467E+39

Nth Root

^y√n

²√n	9053.6225346543
³√n	434.39177073079
⁴√n	95.150525666726
⁵√n	38.258589404984

Divisors of 81968081

1, 13, 6305237, 81968081

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	-81968080	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 81968081 can be divided by 4 positive divisors. The sum of these divisors (counting 81968081) is 1, the average is 0.25.

Base conversion 81968081

Base	System	Value
2	Binary	100111000101011101111010001
3	Ternary	12201020102001212
4	Quaternary	10320223233101
5	Quinary	131440434311
6	Senary	12044505505
8	Octal	470535721
10	Decimal	81968081
12	Duodecimal	2354b295
16	Hexadecimal	4e2bbd1
20	Vigesimal	15c6041
36	Base36	1csuz5

Cryptographic Hash Functions

md5	b3f0b34ebe00f87eacbb9d976abd6ba0
sha1	42dbeb6ba68b5a7126b42d1a43cd1847a4cd0c46
sha256	de84192d50e345b203044ccf2f87f92cd0c9431c4412dcadab3e66d58ccee1c4
sha512	2e29b95377ffb9f21e130a3a78cba50ee04ca643035865200f5bb87efe642b8f3d9afb6e36d7c53221935231889b4f8ce775fb229ae2756cbce64fa6c1902e76
ripemd-160	9aa59669abae4bdb21e5bfc41644b58b424a738c

81968081 as geometric shapes

Circle

Radius = n

Diameter	163936162
Circumference	515020642.19691
Area	2.1107626858134E+16

Sphere

Radius = n

Volume	2.3068688907004E+24
Surface area	8.4430507432536E+16
Circumference	515020642.19691

Square

Length = n

Perimeter	327872324
Area	6718766302822561
Diagonal	115920371.8319

Cube

Length = n

Surface area	40312597816935366
Volume	5.5072438052983E+23
Space diagonal	141972880.89092

Equilateral Triangle

Length = n

Perimeter	245904243
Area	2.9093111501676E+15
Altitude	70986440.445461

Triangular Pyramid

Length = n

Surface area	2.9093111501676E+15
Volume	6.4903490672901E+22
Height	38640123.943965