81591628 (number)

81591628 is an even 8-digits composite number following 81591627 and preceding 81591629. In scientific notation, it is written as 8.1591628 × 10^7. The sum of its digits is 40. It has a total of 5 prime factors and 24 positive divisors. There are 39378960 positive integers (up to 81591628) that are relatively prime to 81591628.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred ninety-one thousand six hundred twenty-eight

Notation

Scientific notation 8.1591628 × 10^7
Engineering notation 8.1591628 × 10^6

Prime Factorization of 81591628

Prime Factorization 2 × 2 × 31 × 619 × 1063

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40795814
Product of the distinct prime numbers

The prime factorization of 81591628 is 2 × 2 × 31 × 619 × 1063. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 7, 51, 39, 123, 803, 3310, 3196, 5513, 18438, 277462, 444093, 9689316, 5820343, 63115253, 19408665, 322010664, 871037707, 2539796534, 3202063563

Basic calculations (n = 81591628)

Multiplication

n×y
n×2 163183256
n×3 244774884
n×4 326366512
n×5 407958140

Division

n÷y
n÷2 40795814
n÷3 27197209.333333
n÷3 20397907
n÷5 16318325.6

Exponentiation

ny
n2 6657193759690384
n3 5.4317127676458E+23
n4 4.4318228754061E+31
n5 3.6159964341202E+39

Nth Root

y√n
2√n 9032.8084226336
3√n 433.72574289846
4√n 95.041088075808
5√n 38.223382792226

Divisors of 81591628

1, 2, 4, 31, 62, 124, 619, 1063, 1238, 2126, 2476, 4252, 19189, 32953, 38378, 65906, 76756, 131812, 657997, 1315994, 2631988, 20397907, 40795814, 81591628

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81591627
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81591628 can be divided by 24 positive divisors. The sum of these divisors (counting 81591628) is 1, the average is 0.041666666666667.

Base conversion 81591628

Base System Value
2 Binary 100110111001111110101001100
3 Ternary 12200112021200011
4 Quaternary 10313033311030
5 Quinary 131341413003
6 Senary 12032443004
8 Octal 467176514
10 Decimal 81591628
12 Duodecimal 233a9464
16 Hexadecimal 4dcfd4c
20 Vigesimal 159ij18
36 Base36 1cksi4

Cryptographic Hash Functions

md5 1ca391b64e162465528afcd411bb7cf6
sha1 3b2de17daf88518ec32d8beb98285a7634d7242a
sha256 347c018b9c4c0c238bb19bca793a973117f1d64d39599e62da7514c142f7e949
sha512 e60b009d611c1582a0fffdbb06bc93c6b5ff9a25112dbfae7e52a5f59c1f47e086116ff8e9ec130861e760471cbbb5dcab6bf10c784228b84476d568fd359cb4
ripemd-160 93c09378c9209d4737681ee967986a0f24e4865e

81591628 as geometric shapes

Circle

Radius = n
Diameter 163183256
Circumference 512655318.23846
Area 2.0914191008967E+16

Sphere

Radius = n
Volume 2.2752305236328E+24
Surface area 8.3656764035868E+16
Circumference 512655318.23846

Square

Length = n
Perimeter 326366512
Area 6657193759690384
Diagonal 115387986.8937

Cube

Length = n
Surface area 39943162558142304
Volume 5.4317127676458E+23
Space diagonal 141320845.16826

Equilateral Triangle

Length = n
Perimeter 244774884
Area 2.8826494569036E+15
Altitude 70660422.58413

Triangular Pyramid

Length = n
Surface area 2.8826494569036E+15
Volume 6.4013348857665E+22
Height 38462662.2979