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

81444981 (number)

81444981 is an odd 8-digits composite number following 81444980 and preceding 81444982. In scientific notation, it is written as 8.1444981 × 10^7. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 54296652 positive integers (up to 81444981) that are relatively prime to 81444981.

Interesting facts

81444981 has 4 divisors, whose sum is 108593312
The reverse of 81444981 is 18944418
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	eighty-one million four hundred forty-four thousand nine hundred eighty-one

Notation

Scientific notation	8.1444981 × 10^7
Engineering notation	8.1444981 × 10^6

Prime Factorization of 81444981

Prime Factorization 3 × 27148327

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81444981	Product of the distinct prime numbers

The prime factorization of 81444981 is 3 × 27148327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 9, 11, 29, 282, 399, 4394, 9940, 59725, 68578, 504510, 532676, 4560943, 7566859, 25058101, 41079853, 596838453, 224247169, 3026514206, 1997687745

Basic calculations (n = 81444981)

Multiplication

n×y

n×2	162889962
n×3	244334943
n×4	325779924
n×5	407224905

Division

n÷y

n÷2	40722490.5
n÷3	27148327
n÷3	20361245.25
n÷5	16288996.2

Exponentiation

n^y

n²	6633284930090361
n³	5.402477650988E+23
n⁴	4.4000468963764E+31
n⁵	3.5836173587448E+39

Nth Root

^y√n

²√n	9024.6873076024
³√n	433.46573777787
⁴√n	94.998354236284
⁵√n	38.209632904488

Divisors of 81444981

1, 3, 27148327, 81444981

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	-81444980	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 81444981 can be divided by 4 positive divisors. The sum of these divisors (counting 81444981) is 1, the average is 0.25.

Base conversion 81444981

Base	System	Value
2	Binary	100110110101100000001110101
3	Ternary	12200020211111210
4	Quaternary	10312230001311
5	Quinary	131322214411
6	Senary	12025352033
8	Octal	466540165
10	Decimal	81444981
12	Duodecimal	23338619
16	Hexadecimal	4dac075
20	Vigesimal	1590c91
36	Base36	1chncl

Cryptographic Hash Functions

md5	886845ea4d399737d9d945eddde3eb5e
sha1	93db1465cc76ccfe143f3b473da9f366f7afbadb
sha256	7514a9325b0a9f5f25fc691bcdbdd135cf880280ebac0da48c33abad3f6fd4db
sha512	81f7939531107432d53202a9902c1a4e98ef28debe98d6c2f548bf34fdd4e3803cca017e9ac748b3f6d6e690df3b090fb5a97f3eb3c2065a483a69b749c1c9c9
ripemd-160	c8d7987adc41945bb095be97ebf1f4f89f3056be

81444981 as geometric shapes

Circle

Radius = n

Diameter	162889962
Circumference	511733907.96272
Area	2.083907920554E+16

Sphere

Radius = n

Volume	2.2629845466036E+24
Surface area	8.3356316822159E+16
Circumference	511733907.96272

Square

Length = n

Perimeter	325779924
Area	6633284930090361
Diagonal	115180596.71742

Cube

Length = n

Surface area	39799709580542166
Volume	5.402477650988E+23
Space diagonal	141066845.11348

Equilateral Triangle

Length = n

Perimeter	244334943
Area	2.8722966299994E+15
Altitude	70533422.556741

Triangular Pyramid

Length = n

Surface area	2.8722966299994E+15
Volume	6.3668809703706E+22
Height	38393532.23914