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

81121749 (number)

81121749 is an odd 8-digits composite number following 81121748 and preceding 81121750. In scientific notation, it is written as 8.1121749 × 10^7. The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors. There are 54045216 positive integers (up to 81121749) that are relatively prime to 81121749.

Interesting facts

81121749 has 8 divisors, whose sum is 108234240
The reverse of 81121749 is 94712118
Previous prime number is 1657

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6

Name

Name	eighty-one million one hundred twenty-one thousand seven hundred forty-nine

Notation

Scientific notation	8.1121749 × 10^7
Engineering notation	8.1121749 × 10^6

Prime Factorization of 81121749

Prime Factorization 3 × 1657 × 16319

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81121749	Product of the distinct prime numbers

The prime factorization of 81121749 is 3 × 1657 × 16319. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 4, 10, 48, 332, 197, 5188, 8890, 36561, 46668, 914684, 442600, 1412181, 7241918, 32121389, 30856688, 788846322, 930054398, 6414341792, 7066903763

Basic calculations (n = 81121749)

Multiplication

n×y

n×2	162243498
n×3	243365247
n×4	324486996
n×5	405608745

Division

n÷y

n÷2	40560874.5
n÷3	27040583
n÷3	20280437.25
n÷5	16224349.8

Exponentiation

n^y

n²	6580738160819001
n³	5.3384098931668E+23
n⁴	4.3306114741259E+31
n⁵	3.5130677702056E+39

Nth Root

^y√n

²√n	9006.761293606
³√n	432.89154336404
⁴√n	94.903958261002
⁵√n	38.179256006857

Divisors of 81121749

1, 3, 1657, 4971, 16319, 48957, 27040583, 81121749

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	-81121748	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 81121749 can be divided by 8 positive divisors. The sum of these divisors (counting 81121749) is 1, the average is 0.125.

Base conversion 81121749

Base	System	Value
2	Binary	100110101011101000111010101
3	Ternary	12122122102010020
4	Quaternary	10311131013111
5	Quinary	131231343444
6	Senary	12014415353
8	Octal	465350725
10	Decimal	81121749
12	Duodecimal	23201559
16	Hexadecimal	4d5d1d5
20	Vigesimal	1570479
36	Base36	1capxx

Cryptographic Hash Functions

md5	b16087264ab666255752c99fa45333e3
sha1	ff2469f6dae37c7efb66e22369c4ee348ce1f11d
sha256	a8371affc92287c7017a159c32286393ce7daa991b56426ca8f5428e33dcd51a
sha512	ff8da5f64dcca71ddce45a03ae7da787392ffe215682888f03098762737ce6f31afd61121c9daa53728729629904b3d2646b19c2375140fe0b6afa0df89db8d8
ripemd-160	4310eb2b6c5317196b1162719caf6e0f809036cf

81121749 as geometric shapes

Circle

Radius = n

Diameter	162243498
Circumference	509702981.40951
Area	2.0673998661227E+16

Sphere

Radius = n

Volume	2.2361479069632E+24
Surface area	8.2695994644908E+16
Circumference	509702981.40951

Square

Length = n

Perimeter	324486996
Area	6580738160819001
Diagonal	114723477.63923

Cube

Length = n

Surface area	39484428964914006
Volume	5.3384098931668E+23
Space diagonal	140506990.86685

Equilateral Triangle

Length = n

Perimeter	243365247
Area	2.8495432114615E+15
Altitude	70253495.433425

Triangular Pyramid

Length = n

Surface area	2.8495432114615E+15
Volume	6.291376393686E+22
Height	38241159.213075