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

81123906 (number)

81123906 is an even 8-digits composite number following 81123905 and preceding 81123907. In scientific notation, it is written as 8.1123906 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 26310384 positive integers (up to 81123906) that are relatively prime to 81123906.

Interesting facts

81123906 has 16 divisors, whose sum is 166633344
The reverse of 81123906 is 60932118
Previous prime number is 37

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	eighty-one million one hundred twenty-three thousand nine hundred six

Notation

Scientific notation	8.1123906 × 10^7
Engineering notation	8.1123906 × 10^6

Prime Factorization of 81123906

Prime Factorization 2 × 3 × 37 × 365423

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81123906	Product of the distinct prime numbers

The prime factorization of 81123906 is 2 × 3 × 37 × 365423. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 5, 82, 16, 427, 426, 7562, 9414, 55078, 1018, 703485, 934705, 4334726, 4628676, 5116118, 53154526, 78735549, 357407015, 1014161356, 5399333511

Basic calculations (n = 81123906)

Multiplication

n×y

n×2	162247812
n×3	243371718
n×4	324495624
n×5	405619530

Division

n÷y

n÷2	40561953
n÷3	27041302
n÷3	20280976.5
n÷5	16224781.2

Exponentiation

n^y

n²	6581088124696836
n³	5.3388357440562E+23
n⁴	4.3310720905026E+31
n⁵	3.5135348514915E+39

Nth Root

^y√n

²√n	9006.8810361856
³√n	432.89538014351
⁴√n	94.904589120788
⁵√n	38.179459039411

Divisors of 81123906

1, 2, 3, 6, 37, 74, 111, 222, 365423, 730846, 1096269, 2192538, 13520651, 27041302, 40561953, 81123906

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	-81123905	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 81123906 can be divided by 16 positive divisors. The sum of these divisors (counting 81123906) is 1, the average is 0.0625.

Base conversion 81123906

Base	System	Value
2	Binary	100110101011101101001000010
3	Ternary	12122122112002010
4	Quaternary	10311131221002
5	Quinary	131231431111
6	Senary	12014433350
8	Octal	465355102
10	Decimal	81123906
12	Duodecimal	23202856
16	Hexadecimal	4d5da42
20	Vigesimal	15709f6
36	Base36	1carlu

Cryptographic Hash Functions

md5	5d20f1e5ba9205ce62fdf87418dda0d3
sha1	0cca63640230fb4c806637467dce95dcd9471751
sha256	09e36facb976f0022416c3eb39be9a852d67f6ac39197b0072f7305415d97839
sha512	9b7f40e8f9dfeb8ee0810acfb3ae847eddfadc9c100571c986c620aab7d2ef54bd52e4e0b7132710b79e539bf9a402124a8d8be135a9777d70a9c45730136522
ripemd-160	6015f7b746dfd6cb8bcc73e9b33495c0669a7ab8

81123906 as geometric shapes

Circle

Radius = n

Diameter	162247812
Circumference	509716534.24022
Area	2.0675098105175E+16

Sphere

Radius = n

Volume	2.2363262869666E+24
Surface area	8.2700392420698E+16
Circumference	509716534.24022

Square

Length = n

Perimeter	324495624
Area	6581088124696836
Diagonal	114726528.09788

Cube

Length = n

Surface area	39486528748181016
Volume	5.3388357440562E+23
Space diagonal	140510726.90044

Equilateral Triangle

Length = n

Perimeter	243371718
Area	2.8496947502658E+15
Altitude	70255363.450221

Triangular Pyramid

Length = n

Surface area	2.8496947502658E+15
Volume	6.2918782637721E+22
Height	38242176.032627