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

81220281 (number)

81220281 is an odd 8-digits composite number following 81220280 and preceding 81220282. In scientific notation, it is written as 8.1220281 × 10^7. The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors. There are 53338560 positive integers (up to 81220281) that are relatively prime to 81220281.

Interesting facts

81220281 has 8 divisors, whose sum is 109910304
The reverse of 81220281 is 18202218
Previous prime number is 67

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6

Name

Name	eighty-one million two hundred twenty thousand two hundred eighty-one

Notation

Scientific notation	8.1220281 × 10^7
Engineering notation	8.1220281 × 10^6

Prime Factorization of 81220281

Prime Factorization 3 × 67 × 404081

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81220281	Product of the distinct prime numbers

The prime factorization of 81220281 is 3 × 67 × 404081. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 4, 59, 46, 129, 994, 1855, 8985, 48965, 26383, 430929, 435063, 2255062, 7981051, 41531156, 46321998, 318644946, 34499767, 6878707648, 2327646401

Basic calculations (n = 81220281)

Multiplication

n×y

n×2	162440562
n×3	243660843
n×4	324881124
n×5	406101405

Division

n÷y

n÷2	40610140.5
n÷3	27073427
n÷3	20305070.25
n÷5	16244056.2

Exponentiation

n^y

n²	6596734045718961
n³	5.3578859287556E+23
n⁴	4.3516900069948E+31
n⁵	3.5344548519301E+39

Nth Root

^y√n

²√n	9012.2295243741
³√n	433.06673851785
⁴√n	94.932763176756
⁵√n	38.188526152363

Divisors of 81220281

1, 3, 67, 201, 404081, 1212243, 27073427, 81220281

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81220280	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81220281 can be divided by 8 positive divisors. The sum of these divisors (counting 81220281) is 1, the average is 0.125.

Base conversion 81220281

Base	System	Value
2	Binary	100110101110101001010111001
3	Ternary	12122211102021120
4	Quaternary	10311311022321
5	Quinary	131243022111
6	Senary	12020455453
8	Octal	465651271
10	Decimal	81220281
12	Duodecimal	2324a589
16	Hexadecimal	4d752b9
20	Vigesimal	157cae1
36	Base36	1cctyx

Cryptographic Hash Functions

md5	fd601c26f15a4010beedc56dc18492ff
sha1	1a0af8052f215c10d3642a24eda6e6ecd001cae6
sha256	cccc822a4ac98fc21e926d154eb55923ccb4e01012ce65e9c7085c3ca999b1a1
sha512	ef8bad425d760566d04cc594d23064e74d6b351696d8c30d0e324b327bf59ee7c788a8ffa803a212a07ccb0b9cf9b6f649c153dafdea7b9e48099dc0adbe1c86
ripemd-160	58923e18f389875418d6d5ec0c99c87453a477f2

81220281 as geometric shapes

Circle

Radius = n

Diameter	162440562
Circumference	510322076.2242
Area	2.0724251215716E+16

Sphere

Radius = n

Volume	2.2443060096734E+24
Surface area	8.2897004862865E+16
Circumference	510322076.2242

Square

Length = n

Perimeter	324881124
Area	6596734045718961
Diagonal	114862822.92995

Cube

Length = n

Surface area	39580404274313766
Volume	5.3578859287556E+23
Space diagonal	140677653.29702

Equilateral Triangle

Length = n

Perimeter	243660843
Area	2.8564696328012E+15
Altitude	70338826.648511

Triangular Pyramid

Length = n

Surface area	2.8564696328012E+15
Volume	6.3143291217451E+22
Height	38287607.643318