81006988 (number)

81006988 is an even 8-digits composite number following 81006987 and preceding 81006989. In scientific notation, it is written as 8.1006988 × 10^7. The sum of its digits is 40. It has a total of 5 prime factors and 24 positive divisors. There are 39938304 positive integers (up to 81006988) that are relatively prime to 81006988.

Interesting facts

Basic properties

Name

Name eighty-one million six thousand nine hundred eighty-eight

Notation

Scientific notation 8.1006988 × 10^7
Engineering notation 8.1006988 × 10^6

Prime Factorization of 81006988

Prime Factorization 2 × 2 × 647 × 113 × 277

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40503494
Product of the distinct prime numbers

The prime factorization of 81006988 is 2 × 2 × 647 × 113 × 277. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 2, 86, 76, 67, 164, 7689, 2350, 75596, 82743, 143006, 461890, 3609762, 2739616, 84696427, 37786847, 594400537, 603054770, 5600342081, 6472575973

Basic calculations (n = 81006988)

Multiplication

n×y
n×2 162013976
n×3 243020964
n×4 324027952
n×5 405034940

Division

n÷y
n÷2 40503494
n÷3 27002329.333333
n÷3 20251747
n÷5 16201397.6

Exponentiation

ny
n2 6562132104832144
n3 5.3157855667055E+23
n4 4.3061577761269E+31
n5 3.4882887129682E+39

Nth Root

y√n
2√n 9000.3882138494
3√n 432.68731325294
4√n 94.870375849627
5√n 38.168447632741

Divisors of 81006988

1, 2, 4, 113, 226, 277, 452, 554, 647, 1108, 1294, 2588, 31301, 62602, 73111, 125204, 146222, 179219, 292444, 358438, 716876, 20251747, 40503494, 81006988

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 -81006987
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 81006988 can be divided by 24 positive divisors. The sum of these divisors (counting 81006988) is 1, the average is 0.041666666666667.

Base conversion 81006988

Base System Value
2 Binary 100110101000001000110001100
3 Ternary 12122102120200211
4 Quaternary 10311001012030
5 Quinary 131214210423
6 Senary 12012132204
8 Octal 465010614
10 Decimal 81006988
12 Duodecimal 23167064
16 Hexadecimal 4d4118c
20 Vigesimal 1565h98
36 Base36 1c89e4

Cryptographic Hash Functions

md5 37ea934379b0523e57383b16d786683c
sha1 7d3c6e8c5cd5f65317243e1724c2afdde8b32d1c
sha256 d5406a508c00b5cdb9141728e08de073b9019669637638f443a6c73d25ee7241
sha512 f4d8c8c69514adb37a9a54f685f5dc152a0ed4322b66b4b210817d08a07a0c98a9a2539cf79ca07deb095beafe45ae9e23bcde1389701e481f26eb85b68b9c14
ripemd-160 0bae799dfa8fb92377bc9cd08dd8c48218f195ff

81006988 as geometric shapes

Circle

Radius = n
Diameter 162013976
Circumference 508981916.78047
Area 2.0615546012426E+16

Sphere

Radius = n
Volume 2.2266710512561E+24
Surface area 8.2462184049706E+16
Circumference 508981916.78047

Square

Length = n
Perimeter 324027952
Area 6562132104832144
Diagonal 114561181.07659

Cube

Length = n
Surface area 39372792628992864
Volume 5.3157855667055E+23
Space diagonal 140308218.98412

Equilateral Triangle

Length = n
Perimeter 243020964
Area 2.841486552887E+15
Altitude 70154109.492061

Triangular Pyramid

Length = n
Surface area 2.841486552887E+15
Volume 6.2647133692517E+22
Height 38187060.358865