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

81106721 (number)

81106721 is an odd 8-digits composite number following 81106720 and preceding 81106722. In scientific notation, it is written as 8.1106721 × 10^7. The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors. There are 81028500 positive integers (up to 81106721) that are relatively prime to 81106721.

Interesting facts

81106721 has 4 divisors, whose sum is 81184944
The reverse of 81106721 is 12760118
Previous prime number is 1051

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8

Name

Name	eighty-one million one hundred six thousand seven hundred twenty-one

Notation

Scientific notation	8.1106721 × 10^7
Engineering notation	8.1106721 × 10^6

Prime Factorization of 81106721

Prime Factorization 1051 × 77171

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81106721	Product of the distinct prime numbers

The prime factorization of 81106721 is 1051 × 77171. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 1, 53, 74, 844, 373, 2194, 2227, 93897, 41895, 212247, 314845, 9352241, 618714, 86651528, 60239009, 699340194, 924818236, 2994638708, 3555127013

Basic calculations (n = 81106721)

Multiplication

n×y

n×2	162213442
n×3	243320163
n×4	324426884
n×5	405533605

Division

n÷y

n÷2	40553360.5
n÷3	27035573.666667
n÷3	20276680.25
n÷5	16221344.2

Exponentiation

n^y

n²	6578300191371841
n³	5.3354435827584E+23
n⁴	4.3274033407803E+31
n⁵	3.5098149541513E+39

Nth Root

^y√n

²√n	9005.9269928198
³√n	432.86481031175
⁴√n	94.899562658738
⁵√n	38.177841342141

Divisors of 81106721

1, 1051, 77171, 81106721

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	-81106720	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 81106721 can be divided by 4 positive divisors. The sum of these divisors (counting 81106721) is 1, the average is 0.25.

Base conversion 81106721

Base	System	Value
2	Binary	100110101011001011100100001
3	Ternary	12122121122111122
4	Quaternary	10311121130201
5	Quinary	131230403341
6	Senary	12014222025
8	Octal	465313441
10	Decimal	81106721
12	Duodecimal	231b4915
16	Hexadecimal	4d59721
20	Vigesimal	156i6g1
36	Base36	1caech

Cryptographic Hash Functions

md5	6b7709fe50ffb59cdbdf4521f57367a6
sha1	2c035b8d5b3cec14b232b0e764d462bab54197af
sha256	d9ce77c85cfddc061649afc18573e4f8e52a291c37f7b610564ce868b788349f
sha512	7f291631dfcd9aabe6bd68410f1a0b94ec18c01b3b69ff751fa943f8715f11bfd6e6441a19783a4d3bfa2311cbde723551ab1392fa6dcca9ad9c6514ba3398ce
ripemd-160	9d79ac0cb1a5ad9a693fa4b0630624ff2ab3a78f

81106721 as geometric shapes

Circle

Radius = n

Diameter	162213442
Circumference	509608557.70071
Area	2.0666339554322E+16

Sphere

Radius = n

Volume	2.2349053817649E+24
Surface area	8.2665358217288E+16
Circumference	509608557.70071

Square

Length = n

Perimeter	324426884
Area	6578300191371841
Diagonal	114702224.83781

Cube

Length = n

Surface area	39469801148231046
Volume	5.3354435827584E+23
Space diagonal	140480961.60731

Equilateral Triangle

Length = n

Perimeter	243320163
Area	2.848487539724E+15
Altitude	70240480.803657

Triangular Pyramid

Length = n

Surface area	2.848487539724E+15
Volume	6.2878805633446E+22
Height	38234074.945937