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

81438511 (number)

81438511 is an odd 8-digits composite number following 81438510 and preceding 81438512. In scientific notation, it is written as 8.1438511 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 63458520 positive integers (up to 81438511) that are relatively prime to 81438511.

Interesting facts

81438511 has 8 divisors, whose sum is 101533824
The reverse of 81438511 is 11583418
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	eighty-one million four hundred thirty-eight thousand five hundred eleven

Notation

Scientific notation	8.1438511 × 10^7
Engineering notation	8.1438511 × 10^6

Prime Factorization of 81438511

Prime Factorization 11 × 7 × 1057643

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81438511	Product of the distinct prime numbers

The prime factorization of 81438511 is 11 × 7 × 1057643. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 6, 25, 39, 836, 896, 2017, 6957, 10314, 21763, 216946, 27921, 7980237, 4776237, 68529508, 83666775, 89410646, 492533724, 3358021729, 2808501265

Basic calculations (n = 81438511)

Multiplication

n×y

n×2	162877022
n×3	244315533
n×4	325754044
n×5	407192555

Division

n÷y

n÷2	40719255.5
n÷3	27146170.333333
n÷3	20359627.75
n÷5	16287702.2

Exponentiation

n^y

n²	6632231073897121
n³	5.4011902326611E+23
n⁴	4.3986489017567E+31
n⁵	3.5821941697085E+39

Nth Root

^y√n

²√n	9024.3288393099
³√n	433.45425928218
⁴√n	94.996467509639
⁵√n	38.209025809544

Divisors of 81438511

1, 7, 11, 77, 1057643, 7403501, 11634073, 81438511

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	-81438510	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 81438511 can be divided by 8 positive divisors. The sum of these divisors (counting 81438511) is 1, the average is 0.125.

Base conversion 81438511

Base	System	Value
2	Binary	100110110101010011100101111
3	Ternary	12200020111122011
4	Quaternary	10312222130233
5	Quinary	131322013021
6	Senary	12025302051
8	Octal	466523457
10	Decimal	81438511
12	Duodecimal	23334927
16	Hexadecimal	4daa72f
20	Vigesimal	158jg5b
36	Base36	1chicv

Cryptographic Hash Functions

md5	fa507b71213a3d4cad11f4b23a538839
sha1	020b3e9293f934dc2cf01f0b64e257ff9e653c78
sha256	7c7ca781792059f16e4a128b7d53f434cc72d1d3b49c657bc6d9517c23b4249c
sha512	a10b18a3f4c2219e46d551eb93c82eb495b02a8974f19691148226fd6933220a223f98f77321c452921b3a0643014dfed01fdcf479bb399af9cbbcbea25cf669
ripemd-160	ac61c9a2d1e0a8b3d58be46ebc5ddc948c96ccb2

81438511 as geometric shapes

Circle

Radius = n

Diameter	162877022
Circumference	511693255.75378
Area	2.0835768418665E+16

Sphere

Radius = n

Volume	2.2624452740759E+24
Surface area	8.3343073674661E+16
Circumference	511693255.75378

Square

Length = n

Perimeter	325754044
Area	6632231073897121
Diagonal	115171446.75567

Cube

Length = n

Surface area	39793386443382726
Volume	5.4011902326611E+23
Space diagonal	141055638.74476

Equilateral Triangle

Length = n

Perimeter	244315533
Area	2.8718402968817E+15
Altitude	70527819.372378

Triangular Pyramid

Length = n

Surface area	2.8718402968817E+15
Volume	6.365363733322E+22
Height	38390482.25189