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

81397906 (number)

81397906 is an even 8-digits composite number following 81397905 and preceding 81397907. In scientific notation, it is written as 8.1397906 × 10^7. The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors. There are 40439568 positive integers (up to 81397906) that are relatively prime to 81397906.

Interesting facts

81397906 has 8 divisors, whose sum is 122875020
The reverse of 81397906 is 60979318
Previous prime number is 157

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7

Name

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

Notation

Scientific notation	8.1397906 × 10^7
Engineering notation	8.1397906 × 10^6

Prime Factorization of 81397906

Prime Factorization 2 × 157 × 259229

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81397906	Product of the distinct prime numbers

The prime factorization of 81397906 is 2 × 157 × 259229. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 2, 79, 95, 329, 776, 8256, 1768, 1083, 12551, 535440, 297640, 5328830, 3956702, 56852124, 40951079, 642050265, 662043831, 6871410037, 3560969028

Basic calculations (n = 81397906)

Multiplication

n×y

n×2	162795812
n×3	244193718
n×4	325591624
n×5	406989530

Division

n÷y

n÷2	40698953
n÷3	27132635.333333
n÷3	20349476.5
n÷5	16279581.2

Exponentiation

n^y

n²	6625619101184836
n³	5.3931152079005E+23
n⁴	4.3898828473985E+31
n⁵	3.5732727136356E+39

Nth Root

^y√n

²√n	9022.0788070156
³√n	433.38220763666
⁴√n	94.984624055768
⁵√n	38.205214868034

Divisors of 81397906

1, 2, 157, 314, 259229, 518458, 40698953, 81397906

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	-81397905	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 81397906 can be divided by 8 positive divisors. The sum of these divisors (counting 81397906) is 1, the average is 0.125.

Base conversion 81397906

Base	System	Value
2	Binary	100110110100000100010010010
3	Ternary	12200011102221021
4	Quaternary	10312200202102
5	Quinary	131314213111
6	Senary	12024350054
8	Octal	466404222
10	Decimal	81397906
12	Duodecimal	2331532a
16	Hexadecimal	4da0892
20	Vigesimal	158eef6
36	Base36	1cgn0y

Cryptographic Hash Functions

md5	68d241ff2621497cef7f95c9249ba57e
sha1	c4a5edefe65547b7e5c2a8c682f6a831ef89e8c1
sha256	2330047892ac3c7544697b9c61148e3953af729ef863f615a72d8676a6b6136d
sha512	1a2f07d941385e4622dd27937b1e464207af12b15ddc55be5085d1cc06fa901a5c434056dc340991a58290c4597a46af776d1b55be423c05cfe3ccb70c11cd99
ripemd-160	88e19d9d7be3ea183045a976c3f3c8b550bd673e

81397906 as geometric shapes

Circle

Radius = n

Diameter	162795812
Circumference	511438127.01439
Area	2.0814996293766E+16

Sphere

Radius = n

Volume	2.2590628156138E+24
Surface area	8.3259985175066E+16
Circumference	511438127.01439

Square

Length = n

Perimeter	325591624
Area	6625619101184836
Diagonal	115114022.61397

Cube

Length = n

Surface area	39753714607109016
Volume	5.3931152079005E+23
Space diagonal	140985308.82172

Equilateral Triangle

Length = n

Perimeter	244193718
Area	2.8689772287127E+15
Altitude	70492654.410858

Triangular Pyramid

Length = n

Surface area	2.8689772287127E+15
Volume	6.3558472253779E+22
Height	38371340.871323