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

81649209 (number)

81649209 is an odd 8-digits composite number following 81649208 and preceding 81649210. In scientific notation, it is written as 8.1649209 × 10^7. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 54432804 positive integers (up to 81649209) that are relatively prime to 81649209.

Interesting facts

81649209 has 4 divisors, whose sum is 108865616
The reverse of 81649209 is 90294618
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	eighty-one million six hundred forty-nine thousand two hundred nine

Notation

Scientific notation	8.1649209 × 10^7
Engineering notation	8.1649209 × 10^6

Prime Factorization of 81649209

Prime Factorization 3 × 27216403

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81649209	Product of the distinct prime numbers

The prime factorization of 81649209 is 3 × 27216403. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 1, 65, 85, 753, 168, 443, 8195, 50608, 74055, 658993, 220454, 637894, 9934475, 31156057, 42216740, 600692746, 348736285, 7547497375, 1707869750

Basic calculations (n = 81649209)

Multiplication

n×y

n×2	163298418
n×3	244947627
n×4	326596836
n×5	408246045

Division

n÷y

n÷2	40824604.5
n÷3	27216403
n÷3	20412302.25
n÷5	16329841.8

Exponentiation

n^y

n²	6666593330325681
n³	5.4432207214577E+23
n⁴	4.4443466631943E+31
n⁵	3.628773895716E+39

Nth Root

^y√n

²√n	9035.9951859217
³√n	433.82774882698
⁴√n	95.057851784698
⁵√n	38.228776285703

Divisors of 81649209

1, 3, 27216403, 81649209

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	-81649208	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 81649209 can be divided by 4 positive divisors. The sum of these divisors (counting 81649209) is 1, the average is 0.25.

Base conversion 81649209

Base	System	Value
2	Binary	100110111011101111000111001
3	Ternary	12200122012122210
4	Quaternary	10313131320321
5	Quinary	131400233314
6	Senary	12034005333
8	Octal	467357071
10	Decimal	81649209
12	Duodecimal	23416849
16	Hexadecimal	4ddde39
20	Vigesimal	15a6309
36	Base36	1cm0xl

Cryptographic Hash Functions

md5	ec3b45f14b7f6a6867687a2e0cfaff60
sha1	1b9d702c48102fb42c2d686671f4908fe60fb5a4
sha256	9ce3e2e28baff343b86d29b366fada6e306bc30ba24941fbd424d007e8da7f43
sha512	c6596881f00d54457092b2bffc692ad79f5a76d6681c0fb98313eca221dd2530599c8c93f031f69fd6ccd833e71c767566229e6adad746ce2ca812af9f2eb5f9
ripemd-160	1ee4cd27504156c1eba9dd9a93e0dd23a5ff275a

81649209 as geometric shapes

Circle

Radius = n

Diameter	163298418
Circumference	513017110.33164
Area	2.0943720631022E+16

Sphere

Radius = n

Volume	2.2800509640532E+24
Surface area	8.3774882524087E+16
Circumference	513017110.33164

Square

Length = n

Perimeter	326596836
Area	6666593330325681
Diagonal	115469418.72484

Cube

Length = n

Surface area	39999559981954086
Volume	5.4432207214577E+23
Space diagonal	141420578.38581

Equilateral Triangle

Length = n

Perimeter	244947627
Area	2.886719590381E+15
Altitude	70710289.192905

Triangular Pyramid

Length = n

Surface area	2.886719590381E+15
Volume	6.4148971393964E+22
Height	38489806.241612