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

81649087 (number)

81649087 is an odd 8-digits composite number following 81649086 and preceding 81649088. In scientific notation, it is written as 8.1649087 × 10^7. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 75368376 positive integers (up to 81649087) that are relatively prime to 81649087.

Interesting facts

81649087 has 4 divisors, whose sum is 87929800
The reverse of 81649087 is 78094618
Previous prime number is 13

Basic properties

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

Name

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

Notation

Scientific notation	8.1649087 × 10^7
Engineering notation	8.1649087 × 10^6

Prime Factorization of 81649087

Prime Factorization 13 × 6280699

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81649087	Product of the distinct prime numbers

The prime factorization of 81649087 is 13 × 6280699. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 7, 57, 46, 578, 188, 5925, 1729, 18412, 58296, 664290, 802143, 9506007, 8602350, 86167956, 21964896, 678746912, 909165531, 2031280505, 5943147025

Basic calculations (n = 81649087)

Multiplication

n×y

n×2	163298174
n×3	244947261
n×4	326596348
n×5	408245435

Division

n÷y

n÷2	40824543.5
n÷3	27216362.333333
n÷3	20412271.75
n÷5	16329817.4

Exponentiation

n^y

n²	6666573407933569
n³	5.4431963217625E+23
n⁴	4.4443201003367E+31
n⁵	3.6287467852824E+39

Nth Root

^y√n

²√n	9035.9884351409
³√n	433.82753275217
⁴√n	95.05781627589
⁵√n	38.228764861432

Divisors of 81649087

1, 13, 6280699, 81649087

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	-81649086	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 81649087 can be divided by 4 positive divisors. The sum of these divisors (counting 81649087) is 1, the average is 0.25.

Base conversion 81649087

Base	System	Value
2	Binary	100110111011101110110111111
3	Ternary	12200122012111021
4	Quaternary	10313131312333
5	Quinary	131400232322
6	Senary	12034005011
8	Octal	467356677
10	Decimal	81649087
12	Duodecimal	23416767
16	Hexadecimal	4ddddbf
20	Vigesimal	15a62e7
36	Base36	1cm0u7

Cryptographic Hash Functions

md5	b23068c92381c3d4848e865ff1f804cc
sha1	b7ec6cebd6db1b67d42274daf93614583b6a0c28
sha256	f0e67a87cfed7010c485a80f505053a81d2d7e07eb54ae4d0710e32adb263c94
sha512	fb39a4ad72eaa67dda1ff57800b0927f6ca641ac042f44dbd8dc8934e4ea0db4fb69a99ee7c84f44d459eda897f0db5ce0df613982fd5fc4feef2e88f0184fbb
ripemd-160	c1131c337941f33178dce28aed5eaaa60add9392

81649087 as geometric shapes

Circle

Radius = n

Diameter	163298174
Circumference	513016343.78303
Area	2.0943658042981E+16

Sphere

Radius = n

Volume	2.2800407435328E+24
Surface area	8.3774632171925E+16
Circumference	513016343.78303

Square

Length = n

Perimeter	326596348
Area	6666573407933569
Diagonal	115469246.19078

Cube

Length = n

Surface area	39999440447601414
Volume	5.4431963217625E+23
Space diagonal	141420367.07561

Equilateral Triangle

Length = n

Perimeter	244947261
Area	2.8867109637321E+15
Altitude	70710183.537806

Triangular Pyramid

Length = n

Surface area	2.8867109637321E+15
Volume	6.4148683840799E+22
Height	38489748.73026