81397989, eighty-one million three hundred ninety-seven thousand nine hundred eighty-nine: Prime Factorization, Divisors, Base conversion, Basic calculations, Geometric Shapes

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

Interesting facts

81397989 has 16 divisors, whose sum is 99930240
The reverse of 81397989 is 98979318
Previous prime number is 23

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 54
Digital Root 9

Name

Name	eighty-one million three hundred ninety-seven thousand nine hundred eighty-nine

Notation

Scientific notation	8.1397989 × 10^7
Engineering notation	8.1397989 × 10^6

Prime Factorization of 81397989

Prime Factorization 9 × 17 × 23 × 23131

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81397989	Product of the distinct prime numbers

The prime factorization of 81397989 is 9 × 17 × 23 × 23131. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 7, 49, 8, 438, 399, 7897, 2611, 70238, 83442, 659068, 638287, 9347812, 1535224, 89519654, 60384574, 451943678, 180364076, 1961631171, 8987080667

Basic calculations (n = 81397989)

Multiplication

n×y

n×2	162795978
n×3	244193967
n×4	325591956
n×5	406989945

Division

n÷y

n÷2	40698994.5
n÷3	27132663
n÷3	20349497.25
n÷5	16279597.8

Exponentiation

n^y

n²	6625632613244121
n³	5.3931317057089E+23
n⁴	4.3899007525684E+31
n⁵	3.5732909316866E+39

Nth Root

^y√n

²√n	9022.0834068412
³√n	433.38235494066
⁴√n	94.984648269293
⁵√n	38.205222659467

Divisors of 81397989

1, 9, 17, 23, 153, 207, 391, 3519, 23131, 208179, 393227, 532013, 3539043, 4788117, 9044221, 81397989

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81397988	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81397989 can be divided by 16 positive divisors. The sum of these divisors (counting 81397989) is 1, the average is 0.0625.

Base conversion 81397989

Base	System	Value
2	Binary	100110110100000100011100101
3	Ternary	12200011110001100
4	Quaternary	10312200203211
5	Quinary	131314213424
6	Senary	12024350313
8	Octal	466404345
10	Decimal	81397989
12	Duodecimal	23315399
16	Hexadecimal	4da08e5
20	Vigesimal	158eej9
36	Base36	1cgn39

Cryptographic Hash Functions

md5	9ae4845276382357a0134bf15639e06c
sha1	29aaa3d547531975f8fa2653bfa6e6f94d31c815
sha256	344990af7b119eaafd938b0c341e77aa409c3ee932c6069a26afe25592132493
sha512	70c10f71e4eab24f402b506485fe1c2590e3aad500840e9be77183799c6edf92319cfbdf5719c3c819bb26d21102bcc9271d744bdc5e2c6957d6cd7ace7908e8
ripemd-160	2fc32f16994a8dc172a005f0409b2201152fcc8a

81397989 as geometric shapes

Circle

Radius = n

Diameter	162795978
Circumference	511438648.51877
Area	2.0815038743153E+16

Sphere

Radius = n

Volume	2.2590697261996E+24
Surface area	8.3260154972611E+16
Circumference	511438648.51877

Square

Length = n

Perimeter	325591956
Area	6625632613244121
Diagonal	115114139.9937

Cube

Length = n

Surface area	39753795679464726
Volume	5.3931317057089E+23
Space diagonal	140985452.58193

Equilateral Triangle

Length = n

Perimeter	244193967
Area	2.868983079606E+15
Altitude	70492726.290966

Triangular Pyramid

Length = n

Surface area	2.868983079606E+15
Volume	6.3558666682315E+22
Height	38371379.997899