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

81661560 (number)

81661560 is an even 8-digits composite number following 81661559 and preceding 81661561. In scientific notation, it is written as 8.1661560 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 32 positive divisors. There are 21311616 positive integers (up to 81661560) that are relatively prime to 81661560.

Interesting facts

81661560 has 32 divisors, whose sum is 166809600
The reverse of 81661560 is 06516618
Previous prime number is 47

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6

Name

Name	eighty-one million six hundred sixty-one thousand five hundred sixty

Notation

Scientific notation	8.1661560 × 10^7
Engineering notation	8.1661560 × 10^6

Prime Factorization of 81661560

Prime Factorization 2 × 2 × 2 × 15 × 47 × 14479

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	6	Total number of prime factors
rad	Radical	20415390	Product of the distinct prime numbers

The prime factorization of 81661560 is 2 × 2 × 2 × 15 × 47 × 14479. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 1, 78, 40, 459, 448, 7296, 2847, 96016, 31421, 416791, 486841, 8921541, 9774661, 14032328, 39463463, 310980016, 211630425, 6934321042, 3702775469

Basic calculations (n = 81661560)

Multiplication

n×y

n×2	163323120
n×3	244984680
n×4	326646240
n×5	408307800

Division

n÷y

n÷2	40830780
n÷3	27220520
n÷3	20415390
n÷5	16332312

Exponentiation

n^y

n²	6668610381633600
n³	5.445691267964E+23
n⁴	4.4470364422031E+31
n⁵	3.6315193324716E+39

Nth Root

^y√n

²√n	9036.6785933771
³√n	433.84962263093
⁴√n	95.061446409031
⁵√n	38.229932782023

Divisors of 81661560

1, 2, 4, 8, 15, 30, 47, 60, 94, 120, 188, 376, 705, 1410, 2820, 5640, 14479, 28958, 57916, 115832, 217185, 434370, 680513, 868740, 1361026, 1737480, 2722052, 5444104, 10207695, 20415390, 40830780, 81661560

32 divisors

τ	Total Divisors	32	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81661559	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.03125	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	32	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81661560 can be divided by 32 positive divisors. The sum of these divisors (counting 81661560) is 1, the average is 0.03125.

Base conversion 81661560

Base	System	Value
2	Binary	100110111100000111001111000
3	Ternary	12200122211121020
4	Quaternary	10313200321320
5	Quinary	131401132220
6	Senary	12034142440
8	Octal	467407170
10	Decimal	81661560
12	Duodecimal	23421a20
16	Hexadecimal	4de0e78
20	Vigesimal	15a7di0
36	Base36	1cmago

Cryptographic Hash Functions

md5	676cbb565a65ffc901ff0761376a7914
sha1	9a4cf4c695e133089df938f0055cca11f0b210e0
sha256	a65f369feb84d0c6c7f82a220f64ef98fd5dee539a83fbf3aa6e6840fea246f3
sha512	d8e415d73618e096e4a0494c6e1c2d39fef8b3af9b8b251491d16831e02824d1ae6254d1e754abd6b60a54ec548e1152f21c2b90d1e14389643ec72e1c4fc22f
ripemd-160	99f48f76aeb57c0776aceef08669b1bfa12ecfa9

81661560 as geometric shapes

Circle

Radius = n

Diameter	163323120
Circumference	513094713.95336
Area	2.0950057384593E+16

Sphere

Radius = n

Volume	2.2810858241538E+24
Surface area	8.3800229538371E+16
Circumference	513094713.95336

Square

Length = n

Perimeter	326646240
Area	6668610381633600
Diagonal	115486885.67654

Cube

Length = n

Surface area	40011662289801600
Volume	5.445691267964E+23
Space diagonal	141441970.94533

Equilateral Triangle

Length = n

Perimeter	244984680
Area	2.8875929992177E+15
Altitude	70720985.472667

Triangular Pyramid

Length = n

Surface area	2.8875929992177E+15
Volume	6.4178087063761E+22
Height	38495628.558848