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

81489091 (number)

81489091 is an odd 8-digits prime number following 81489090 and preceding 81489092. In scientific notation, it is written as 8.1489091 × 10^7. The sum of its digits is 40. It has a total of 1 prime factors and 2 positive divisors. There are 81489090 positive integers (up to 81489091) that are relatively prime to 81489091.

Interesting facts

81489091 has 2 divisors, whose sum is 81489092
The reverse of 81489091 is 19098418
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

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

Notation

Scientific notation	8.1489091 × 10^7
Engineering notation	8.1489091 × 10^6

Prime Factorization of 81489091

Prime Factorization 81489091

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81489091	Product of the distinct prime numbers

The prime factorization of 81489091 is 81489091. Since it has a total of 1 prime factors.

Most popular turbo-numbers

3, 9, 21, 43, 400, 179, 3771, 4469, 62314, 5417, 445987, 732920, 2922771, 1522318, 69293616, 81789877, 838332706, 356989549, 5951988717, 69743914

Basic calculations (n = 81489091)

Multiplication

n×y

n×2	162978182
n×3	244467273
n×4	325956364
n×5	407445455

Division

n÷y

n÷2	40744545.5
n÷3	27163030.333333
n÷3	20372272.75
n÷5	16297818.2

Exponentiation

n^y

n²	6640471952006281
n³	5.4112602317999E+23
n⁴	4.4095867745382E+31
n⁵	3.5933321794274E+39

Nth Root

^y√n

²√n	9027.130828785
³√n	433.54397760192
⁴√n	95.011214226453
⁵√n	38.213770819138

Divisors of 81489091

1, 81489091

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81489092	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40744546	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9027.1308841736	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999754568	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489091 can be divided by 2 positive divisors. The sum of these divisors (counting 81489091) is 81489092, the average is 40744546.

Base conversion 81489091

Base	System	Value
2	Binary	100110110110110110011000011
3	Ternary	12200100002000111
4	Quaternary	10312312303003
5	Quinary	131330122331
6	Senary	12030332151
8	Octal	466666303
10	Decimal	81489091
12	Duodecimal	2335a057
16	Hexadecimal	4db6cc3
20	Vigesimal	15962eb
36	Base36	1cildv

Cryptographic Hash Functions

md5	3310b4235e51117e6a2ad0389ca73041
sha1	f21ad75b088235cd8a146ce000ea2813645abff9
sha256	2e2dee17cd5320cbc288849499b00293c370f08dfd75de1dcc8326228a7ebc78
sha512	d92ccce8d6adce6eb89c9f7f6acb6aaff8c7b782d88918c009f53f3f24f8ed71a2a3b325284878723e740a0c6ef78a8f86c39cfda54fd57fba9be7767c45591d
ripemd-160	d602221df5f33e129a8cc1b7df7e69d4d8249d2f

81489091 as geometric shapes

Circle

Radius = n

Diameter	162978182
Circumference	512011059.26662
Area	2.0861657900792E+16

Sphere

Radius = n

Volume	2.2666633854513E+24
Surface area	8.3446631603168E+16
Circumference	512011059.26662

Square

Length = n

Perimeter	325956364
Area	6640471952006281
Diagonal	115242977.67766

Cube

Length = n

Surface area	39842831712037686
Volume	5.4112602317999E+23
Space diagonal	141143245.8746

Equilateral Triangle

Length = n

Perimeter	244467273
Area	2.8754087017777E+15
Altitude	70571622.937302

Triangular Pyramid

Length = n

Surface area	2.8754087017777E+15
Volume	6.377231341118E+22
Height	38414325.892552